Relevant bibliographies by topics / CFD, Software, FloEFD, Simulation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'CFD, Software, FloEFD, Simulation'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "CFD, Software, FloEFD, Simulation"

1

Baran, Krzysztof, Antoni Różowicz, Henryk Wachta, Sebastian Różowicz, and Damian Mazur. "Thermal Analysis of the Factors Influencing Junction Temperature of LED Panel Sources." Energies 12, no. 20 (October 17, 2019): 3941. http://dx.doi.org/10.3390/en12203941.

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Limiting junction temperature Tj and maintaining its low value is crucial for the lifetime and reliability of semi-conductive light sources. Obtaining the lowest possible temperature of Tj is especially important in the case of LED panels, where in a short distance there are many light sources installed, between which there occurs mutual thermal coupling. The article presents results of simulation studies connected with the influence of construction and ambient factors that influence the value of junction temperature of exemplary LED panel sources. The influence of radiator’s construction, printed circuit boards, as well as the influence of ambient factors, such as ambient temperature Ta and air flow velocity v were subjected to the analysis. Numerical calculations were done in the FloEFD software of the Mentor Graphics company, which is based on computational fluid dynamics (CFD). For construction of the LED thermal panel model the optical efficiency ηo and real thermal resistance Rthj-c were determined in a laboratory for the applied light sources.
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Thilmany, Jean. "How Does Your Fluid Flow?" Mechanical Engineering 125, no. 12 (December 1, 2003): 35–37. http://dx.doi.org/10.1115/1.2003-dec-3.

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This article reviews the method of analyzing fluid flow in structures and designs, which is enjoying a burst of interest. Twenty years later, manufacturers across a myriad of industries are licensing the technology from a pool of vendors who now market computational fluid dynamics (CFD) packages of many stripes. Engineers use CFD to predict how fluids will flow and to predict the quantitative effects of the fluid on the solids with which they are in contact. Airflow is commonly studied with the software. Many mechanical engineers do not need access to all the bells and whistles an advanced CFD program can provide. Advanced analysis programs are usually the purview of a user trained on a particular CFD package. Engineers used CFD to determine how to best position the fans so that air flowed inside the refrigerator and the freezer in the most efficient way. After studying fluid flow simulations, they made prototypes of the most promising modeled designs to see if the prototypes matched CFD simulation results.
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SMG Akele, C. Aganama, E. Emeka, Y. Abudu-Mimini, S. Umukoro, and Okonkwo Raymond. "CFD Port Flow Simulation of Air Flow Rate in Spark Ignition Engine." International Journal of Engineering and Management Research 10, no. 6 (December 25, 2020): 87–95. http://dx.doi.org/10.31033/ijemr.10.6.13.

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In the early stages of development of internal combustion engine (ICE), limitations such as speed, range, and lifespan led to series of researches resulting in the reduction or elimination of these limitations. Combustion in ICE is a rapid and controlled endothermic reaction between air in oxygen and fuel which is accompanied by significant increase in temperature and pressure with the production of heat, flame and carbon particle deposits. This combustion process is a phenomenon that involves turbulence, loss of air-fuel mixture during inflow and outflow into the cylinder. The objection of this study is to perform port flow analysis on ICE to determine flow rate and swirl at different valve lift under stationary engine parts.Methodology employed to analyze and solve the ICE port flow simulation is the use of CFD software that uses the finite volume method of numerical analysis to solve the continuity, Navier-Stokes and energy equations governing the air medium in the internal combustion engine cylinder. The model geometry for the analysis was generated using the Ansys Design Modeller for one cylinder, one suction port and one exhaust port, and two valves. The domain considered is internal combustion engine suction port with 86741 nodes and 263155 elements. Study results revealed that air mass was more concentrated around the valve and inlet port cross-section with swirling motion seen, air stream experienced turbulence as it flowed downwards inside the cylinder, air stream spread was turbulent which will eventually enhance smooth combustion, swirling air stream moves towards the cylinder wall where it experienced tumbling and turbulent which will eventually enhance smooth combustion. From the simulation it was revealed that mass flow rate of inlet air increases with valve lift.
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SMG Akele, C. Aganama, E. Emeka, Y. Abudu-Mimini, S. Umukoro, and Okonkwo Raymond. "CFD Port Flow Simulation of Air Flow Rate in Spark Ignition Engine." International Journal of Engineering and Management Research 10, no. 6 (December 25, 2020): 87–95. http://dx.doi.org/10.31033/ijemr.10.6.13.

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In the early stages of development of internal combustion engine (ICE), limitations such as speed, range, and lifespan led to series of researches resulting in the reduction or elimination of these limitations. Combustion in ICE is a rapid and controlled endothermic reaction between air in oxygen and fuel which is accompanied by significant increase in temperature and pressure with the production of heat, flame and carbon particle deposits. This combustion process is a phenomenon that involves turbulence, loss of air-fuel mixture during inflow and outflow into the cylinder. The objection of this study is to perform port flow analysis on ICE to determine flow rate and swirl at different valve lift under stationary engine parts.Methodology employed to analyze and solve the ICE port flow simulation is the use of CFD software that uses the finite volume method of numerical analysis to solve the continuity, Navier-Stokes and energy equations governing the air medium in the internal combustion engine cylinder. The model geometry for the analysis was generated using the Ansys Design Modeller for one cylinder, one suction port and one exhaust port, and two valves. The domain considered is internal combustion engine suction port with 86741 nodes and 263155 elements. Study results revealed that air mass was more concentrated around the valve and inlet port cross-section with swirling motion seen, air stream experienced turbulence as it flowed downwards inside the cylinder, air stream spread was turbulent which will eventually enhance smooth combustion, swirling air stream moves towards the cylinder wall where it experienced tumbling and turbulent which will eventually enhance smooth combustion. From the simulation it was revealed that mass flow rate of inlet air increases with valve lift.
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Klas, Roman, and Simona Fialová. "Pulse flow of liquid in flexible tube." EPJ Web of Conferences 213 (2019): 02041. http://dx.doi.org/10.1051/epjconf/201921302041.

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The simulation of liquid flow in significantly deformed elastic material is one of the more challenging tasks. Tube wall motion prediction implemented directly into CFD software can noticeably reduce the computational and time demands of such problems. The FSI simulation of a liquid-flowed flexible plastic tube was analyzed on the FEA and CFD solvers coupling basis. The flexible tube is the basic symmetric test body that could be appropriately tested on the experimental stand. A comparison of experimental data and FSI problem using commercial code and one-dimensional tube models was made by evaluating the tube wall deformation magnitudes at defined flow ratios. The type of tube material, which can be understood as a nonlinear from the stress and deformation point of view, was considered. The paper shows several possibilities of tube modeling using the main constitutive relations of linear and nonlinear mechanics. The hyperelastic material models such as neo-Hookean and Mooney-Rivlin were tested. The results represent differences in impacts on the tube liquid flow and differences in the magnitudes of the wall tube deformations. Based on these findings it should be possible to simulate the problems of liquid flow in more complicated shape flow zones, such as arteries affected by various defects, in our future research.
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Wuwung, Vicky, Nelli Anggreyni, Valeri Maria Hitoyo, and Carolus Bintoro. "JUSTIFIKASI CFD KEDALAMAN GROOVE BAN PADA PROSES PERAWATAN HARIAN PESAWAT B737-800 AKIBAT HYDROPLANING (B737-800 TIRE GROOVE DEPTH CFD JUSTIFICATION ON ITS DAILY MAINTENANCE PROCESS DUE TO HYDROPLANING)." Jurnal Teknologi Dirgantara 15, no. 1 (December 14, 2017): 29. http://dx.doi.org/10.30536/j.jtd.2017.v15.a2528.

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As a reference in daily maintenace process of Boeing 737-800 air plane, The tire groove depth influence justification which is moving on the contaminated runway that could be potential to hydroplaning phenomenon must be reviewed. Tire groove is a pattern on the tire surface that has a function to flow the water in front of the tire to the aft of the tire smoothly through the bottom of the tire. This mechanism let the tire less of a lift force that can be meant as a hydroplaning prevention. To understand hydroplaning phenomenon and groove depth tire influence, a numerical simulation is performed by using a CFD software Numeca Fine/Marine. This simulation is 3D, unsteady fluid dynamic simulation, with an assumption a rigid body tire at a short time after the airplane touch down to the runway (after skidding process) with velocity V = 62.27 m/s. The contaminated runway is modelled as a pool water (flood) on the flat surface runway with its height of 2.54 mm. Numerical simulation on this B 737-800 tire result shows that a hydroplaning phenomenon will happen for tire with groove depth less than 0.4”. This concludes that a lesser groove depth of tire will reduce a tire groove cross sectional area, and will increase a compression force in the bottom at the front of the tire, that will result in increasing a lift force to the tire and finally increasing a chance to hydroplaning process. From this result, furthermore, the influence of this groove depth of B 737-800 tire variation that is run on a contaminated runway can be used as a reference on B 737-800 tire daily maintenance. AbstrakGroove atau ‘kembang” pada ban pesawat merupakan sarana untuk mengalirkan air dari bagian depan menuju bagian belakang melalui bagian bawah ban, tanpa mengangkat ban sehingga dapat mencegah terjadinya hydroplaning. Sehingga, pengaruh nilai kedalaman groove terhadap gaya angkat pada ban pesawat B737-800 yang bergerak di landasan dengan genangan air perlu dijustifikasi dalam proses perawatan harian. Penelitian ini menyimulasikan proses mengalirnya air pada bagian bawah ban dengan menggunakan simulasi numerik (CFD Numeca Fine/Marine) 3-D unsteady sebagai metode untuk menjustifikasi pengaruh groove. Simulasi dilakukan untuk kondisi gerakan ban pesawat pada saat proses landing (V = 62,275 m/s) beberapa saat setelah touch down (setelah skidding) dengan ban pesawat dianggap rigid body sebagai kondisi batas. Selanjutnya tinggi genangan air dipilih pada saat runway dinyatakan dalam kondisi flood (tinggi genangan air = 2,54mm). Simulasi tersebut menampilkan hasil perhitungan ban pesawat Boeing 737-800, dengan hydroplaning mulai terjadi ketika kedalaman groove ban berada dibawah 0,4 inch. Hal ini menunjukkan bahwa semakin kecil kedalaman groove, maka semakin kecil luas penampang groove dan semakin besar gaya kompresi yang terjadi pada bagian bawah ban dan semakin memperbesar kemungkinan terjadinya fenomena hydroplaning. Dengan diketahuinya hasil dari simulasi tersebut, maka hasil penelitian ini dapat digunakan sebagai masukan bagi proses maintenance harian pesawat B737-800 dan mampu memberikan suatu hal baru dalam pembelajaran khususnya mengenai fenomena hydroplaning.
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Azimi, Hamed, and Saeid Shabanlou. "Numerical Simulation of Free Surface and Flow Field Turbulence in a Circular Channel with the Side Weir in Subcritical Flow." International Journal of Nonlinear Sciences and Numerical Simulation 18, no. 3-4 (May 24, 2017): 255–67. http://dx.doi.org/10.1515/ijnsns-2016-0115.

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AbstractWhen flow surface is higher than of a side weir crest, the overflow spilt over the crest and divert into a side channel. These structures are extensively used in urban sewage disposal networks, water supply systems, and drainage and flood diversion networks. This study simulates stream free surface, discharge over a sharp-crest side weir, and discharge coefficient of a side weir in a circular channel using FLOW-3D software. Numerical model results were compared with the experimental ones and the comparison proved an acceptable consistency between the numerical and experimental results. RNG k-ε turbulence model was used for simulating flow turbulence. The volume of fluid (VOF) method was used in this CFD analysis for predicting changes of flow free surface. Then, the numerical simulation results were examined for discharge coefficient of the side weir and flow free surface for different discharge passing through the main channel. The changes of dividing stream surface from main channel bed toward stream free surface were examined. The concluding section assessed the effect of shape of a circular channel on the pattern and intensity of a secondary flow in the main channel and the impacts of the discharge passing through the circular channel on height of stagnation point and shear stress pattern in the main channel bed.
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Yuan, Wei Guo, and Ya Bin Wang. "Verification of Control System by Physical Simulation." Applied Mechanics and Materials 472 (January 2014): 389–93. http://dx.doi.org/10.4028/www.scientific.net/amm.472.389.

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Control system is generally verified by experiment, some of which are too difficult or high-cost to implement, while physical simulation can be substituted for experiment to verify the effectiveness of control system. The study take the heat exchanger as an example to describe the process of verification by physical simulation: Choose FLOEFD and SIMULINK as the software of physical simulation and control system design, establish the mathematical model of heat exchanger, design control module, whose output is set as an input of FLOEFD, compare the result of physical simulation and SIMULINK, if they are similar, the control module is effective.
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Hien, Le Thi Thu, and Nguyen Van Chien. "Investigate Impact Force of Dam-Break Flow against Structures by Both 2D and 3D Numerical Simulations." Water 13, no. 3 (January 30, 2021): 344. http://dx.doi.org/10.3390/w13030344.

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The aim of this paper was to investigate the ability of some 2D and 3D numerical models to simulate flood waves in the presence of an isolated building or building array in an inundated area. Firstly, the proposed 2D numerical model was based on the finite-volume method (FVM) to solve 2D shallow-water equations (2D-SWEs) on structured mesh. The flux-difference splitting method (FDS) was utilized to obtain an exact mass balance while the Roe scheme was invoked to approximate Riemann problems. Secondly, the 3D commercially available CFD software package was selected, which contained a Flow 3D model with two turbulent models: Reynolds-averaged Navier-Stokes (RANs) with a renormalized group (RNG) and a large-eddy simulation (LES). The numerical results of an impact force on an obstruction due to a dam-break flow showed that a 3D solution was much better than a 2D one. By comparing the 3D numerical force results of an impact force acting on building arrays with the existence experimental data, the influence of velocity-induced force on a dynamic force was quantified by a function of the Froude number and the water depth of the incident wave. Furthermore, we investigated the effect of the initial water stage and dam-break width on the 3D-computed results of the peak value of force intensity.
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Yang, Rong Zun, Xin Hua Wang, Dong Hu, and Li Wei Wang. "Leakage of Long-Distance Pipeline by FIOEFD Simulation and Indoor Experiment." Applied Mechanics and Materials 310 (February 2013): 362–67. http://dx.doi.org/10.4028/www.scientific.net/amm.310.362.

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Based on the established indoor experimental platform for the leakage of buried oil pipeline, the characteristics of leakage under varied transfer pressure have been studied and simulated according to the experimental model by using FLOEFD—an analysis software of fluid & heat transfer. By comparing and analyzing the result of simulation, experiment and applying correlate theory of fluid dynamics，the theoretical model is established.
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Dissertations / Theses on the topic "CFD, Software, FloEFD, Simulation"

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Bröske, Rolf. "Strömungs- und Thermalsimulationen auf Basis eines kartesischen Solvers." Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A21386.

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CFD-Analysen sind in den letzten Jahren ein fester Bestandteil in der Produktentwicklung geworden. Dies liegt primär daran, dass es in den letzten Jahrzehnten große Fortschritte in der Entwicklung der Software und dem Preisverfall der Hardware gegeben hat. Das einstige Expertenwerkzeug CFD hat heutzutage auch in vielen kleinen und mittelständischen Unternehmen seinen festen Platz gefunden und somit ein enormes Anwendungsspektrum erschlossen. Ein wesentlicher Schlüssel für diesen Erfolg war und ist die Effizienz bei der Erstellung der Berechnungsmodelle. Ein Meilenstein war die ab Mitte der 1990er Jahre verfügbare Verwendung unstrukturierter Netze. Erst durch den Einsatz von Tetraedern konnten beliebig komplexe Strukturen überhaupt vernetzt werden. Dieser Vortrag beschreibt die Verwendung von sogenannten kartesischen Netzen in Kombination mit der Immersed Boundary Methode. Dabei handelt es sich um einen bislang wenig beachteten Weg, der den Anwender nochmals erheblich bei der Modellaufbereitung entlastet und somit auch anspruchsvolle CFD-und Thermalsimulationen für Konstrukteure zugänglich macht.
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Li, Ning. "Comparison between three different CFD software and numerical simulation of an ambulance hall." Thesis, KTH, Energiteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160938.

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Ambulance hall is a significant station during emergency treatment. Patients need to be transferred from ambulance cars to the hospital’s building in the hall. Eligible performance of ventilation system to supply satisfied thermal comfort and healthy indoor air quality is very important. Computational fluid dynamic (CFD) simulation as a broadly applied technology for predicting fluid flow distribution has been implemented in this project. There has two objectives for the project. The first objective is to make comparison between the three CFD software which consists of ANSYS Fluent, Star-CCM+ and IESVE Mcroflo according to CFD modeling of the baseline model. And the second objective is to build CFD modeling for cases with difference boundary conditions to verify the designed ventilation system performance of the ambulance hall. In terms of simulation results from the three baseline models, ANSYS Fluent is conclusively recommended for CFD modeling of complicated indoor fluid environment compared with Star-CCM+ and IESVE Microflo. Regarding to the second objective, simulation results of case 2 and case 3 have shown the designed ventilation system for the ambulance hall satisfied thermal comfort level which regulated by ASHRAE standard with closed gates. Nevertheless, threshold limit value of the contaminants concentration which regulated by ASHRAE IAQ Standard cannot be achieved. From simulation results of case 4.1 to 4.3 shown that the designed ventilation system cannot satisfy indoor thermal comfort level when the gates of the ambulance hall opened in winter. In conclusion, measures for decreasing contaminants concentration and increasing indoor air temperature demanded to be considered in further design.
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Burman, Gustav. "Evaluation of carbon regeneration kiln : Comparison of different kiln types using simulation software." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-175613.

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Energy efficiency calculations and an economical analysis has been conducted on two different carbon regeneration kiln types. The purpose was do determine what economical winnings there could be by replacing the carbon regeneration system using propane burner with one heated by electricity. This project was conducted on a carbon regeneration kiln that stands at the G1A processing plant in Boliden. The two different heating solutions were implemented in the multiphysics software Comsol to determine their energy efficiency’s, and then an economical analysis was conducted by comparing the annual consumption of energy per kiln type. The models were built to be as accurate as possible, but some simplifications had to be made to make the simulations possible. The results from the study showed that the electrical heating solution was over four times more energy efficient, which would lead to an annual saving of 745 714 SEK/year. The results of this simulation must however be considered somewhat inconclusive due to implementation difficulties, but it might serve as a good predictor as to why electrical heating panels could be economically feasible.
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Fávero, Jovani Luiz. "Simulação de escoamentos viscoelásticos : desenvolvimento de uma metodologia de análise utilizando o software OpenFOAM e equações constitutivas diferenciais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/16306.

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A necessidade cada vez maior do uso de produtos poliméricos sintéticos, como para produção de embalagens, partes de eletrodomésticos, eletroeletrônicos, automóveis, etc., tem levado a indústria de polímeros a buscar cada vez mais a diminuição do desperdício e aumento da qualidade dos produtos. Para isso tem-se buscado entender melhor como as propriedades reológicas dos polímeros afetam seu processamento e a qualidade final dos produtos. Com o intuito de se obter resultados mais rápidos e com menor custo recorre-se cada vez mais a estudos de modelagem e simulação de processos de transformação de polímeros. Neste trabalho é apresentada uma nova ferramenta de CFD para simulações de escoamentos envolvendo fluidos viscoelásticos, o viscoelasticFluidFoam solver. A implementação do módulo foi feita no pacote de CFD OpenFOAM devido principalmente às vantagens oferecidas por esse software, como por exemplo, possibilidade de uso de geometrias complexas, malhas não-estruturadas, técnicas multigrid e paralelização do processamento de dados, além de ser um software gratuito e de código aberto. Foi feita a implementação do modelo de Maxwell, UCM, Oldroyd-B, Giesekus, FENE-P, FENE-CR, PTT na forma linear e exponencial, e DCPP, todos na forma multimodo. Dentre as várias metodologias disponíveis para resolver o problema da obtenção de soluções estáveis a altos valores deWeissenberg foi escolhida a DEVSS devido a sua estabilidade e aplicação a modelos complexos. Para se fazer a validação do solver desenvolvido foi feito a comparação com resultados numéricos e experimentais obtidos da literatura. É mostrada uma comparação entre vários modelos para obtenção da velocidade e diferença de tensões normais para um escoamento em uma contração plana abrupta 4:1. Os resultados obtidos foram satisfatórios sendo possível dar credibilidade ao solver implementado e garantir a disponibilidade de uma boa ferramenta para estudo de fluidos viscoelásticos para ser usada tanto no meio acadêmico como no setor industrial.
Synthetic polymer products are of great importance in several industrial sectors, such as for production of packaging, parts of appliances, electronics, and cars. Due to the increasing demand for this kind of material, reduction of waste and increase of quality has become a key issue in polymer industry. In this sense modeling and simulation of processing operations appears as a fundamental tool, leading to better understanding of how the rheological properties of polymers affect their processability and final product quality, and reducing time and costs related to the development of processes and products. This work presents a new Computational Fluid Dynamics (CFD) tool for the simulation of viscoelastic fluid flows, called viscoelasticFluidFoam solver, which consists of a viscoelastic fluid module to be used OpenFOAM CFD package. The advantages of using OpenFOAM as development platform include its characteristics with relation to flexibility to deal with complex geometries, unstructured and non orthogonal meshes, moving meshes, large variety of interpolation schemes and solvers for the linear discretized system, and the possibility of data processing parallelization. Linear Maxwell, Oldroyd-B, Giesekus, Phan-Thien-Tanner (PTT), the Finitely Extensible Nonlinear Elastic (FENE-P and FENE-CR), and DCPP constitutive equations have been implemented, in single and the multimode form. Among the various available methodologies to solve the problem of obtaining stable solutions to high Weissenberg values, the DEVSS was chosen due to its stability and application to complex models. The viscoelasticFluidFoam solver was tested by comparing its predictions with experimental and numerical data from literature for the analysis of a planar 4:1 contraction flow. These tests have shown the great potential of this solver for application both in academia and in industry.
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Deller, Christoph. "Mehrkörpersimulation integriert in die Co Simulation: Wie geht das? Wo führt das hin?" Technische Universität Chemnitz, 2019. https://monarch.qucosa.de/id/qucosa%3A34278.

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In der Entwicklung der numerischen Simulation im Laufe der letzten Jahre ist ein deutlicher Trend zur Konsolidierung tu beobachten. Neben der wirtschaftlichen Konsolidierung der Anbieter - letztendlich immer weniger Anbieter, die immer mehr anbieten • gibt es noch die technische Konsolidierung der Softwarelösungen. Das Stichwort ist Integration mit der Motivation, verschiedene Solver-Disziplinen unter einem gemeinsamen Dach zu vereinigen. Der Nutzer soll wenn möglich nur noch ein Tool benutzen, das alles kann. Das ist ein ambitioniertes Ziel und technisch in nächster Zeit nicht umsetzbar, da die Unterschiede in den Lösungsansåtzen unterschiedliche Datenmodelle verlangen. Daher ist als ObergangsIOsung die Co-Simulation das Mittel der Wahl. Damit sind verschiedene Solver gemeint, die über entsprechende Schnittstellen reibungslos und vor allem ohne Nutzerinteraktion miteinander kommunizieren, um so ihre volle Leistung zu entfalten. Auf diesem Gebiet wurden in den letzten Jahren deutliche Fortschritte erzielt. MSC Software bringt nun die Möglichkeiten technologisch auf ein neues Level. Der Vortrag zeigt den konzeptionellen Ansatz, den MSC verfolgt und schrittweise umsetzt. Gezeigt werden die Vorteile in der Anwendung für den Nutzer, aber auch die Limitationen, derer man sich immer bewusst sein muss. Mit konkreten Beispielen aus der Praxis werden die Vorteile der Co-Simulation untermauert. Der Fokus des Vortrages liegt auf den Möglichkeiten, die sich für dynamische Systeme aus der Co-Simulation ergeben und wie die traditionellen Grenzen der Mehrkörpersimulation überwunden werden können: Zum einen durch Kopplung mit nichtlinearer FEM aber auch mit CFO. Inhaltlich soll der Vortrag bestenfalls den Vorstellungshorizont der Zuhörer erweitern. in jedem Fall aber konkret belegen, wo die Co-Simulation bessere Ergebnisse erzielt als die herkömmliche, auf einen Solver beschränkte Vorgehensweise.
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Koňařík, Josef. "Analýza aerodynamiky vozidla Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228797.

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The aim of thesis is to devise the body due to the current model in the 3D software ProEngineer and given by current Formula Student competition rules. Subsequently, the model will be created for the purposes of CFD software for numerical analysis of aerodynamics. Based on this analysis, the simulation will be obtained with the coefficient of air and axles load.
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Kysilka, Michal. "Optimalizace vzduchotechniky wellness." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226004.

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The theme of diploma thesis is a design optimization of air distribution in swimming-pool hall with regard to free water surface evaporation. This problem was solved according to determined criterions with the aid of CFD simulation. Experimental measurement part of the thesis deals with evaporation problems where own formula for this physical phenomenon is determined. This formula is compared with already known algorithms. Author suggests that such formula might be integrated in CFD software.
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Gomes, Vítor Manuel Martins Gonçalves da Costa. "Computational simulation of atmospheric flows over mountainous regions using the commercial CFD software star-CCM+." Dissertação, 2009. http://hdl.handle.net/10216/59888.

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Gomes, Vítor Manuel Martins Gonçalves da Costa. "Computational simulation of atmospheric flows over mountainous regions using the commercial CFD software star-CCM+." Master's thesis, 2009. http://hdl.handle.net/10216/59888.

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Song, H., Murali Damodaran, and Quock Y. Ng. "Simulation of Flow Field and Particle Trajectories in Hard Disk Drive Enclosures." 2003. http://hdl.handle.net/1721.1/3895.

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The airflow field and particle trajectories inside hard disk drive (HDD) are investigated in this study using commercial software Fluent and Gambit. Three-dimensional grids inside the HDD configuration are built using Gambit taking into account all the components and their geometric details. The airflow field inside HDD is simulated using three incompressible Navier-Stokes equations for various disk rotational speeds. The effects of using the various turbulence models inside the Fluent software such as the standard k - ε , RNG k - ε and Reynolds Stress Method on the computed airflow characteristics are also assessed. Steady flow fields and the effects of rotational speeds are assessed. Based on the computed steady airflow patterns, particle trajectories are computed using routines available in Fluent as well as special particle trajectory functions defined by the user via the user-defined functions. Particles of different sizes and materials are injected at various locations in the computed flow field and the corresponding particle trajectories are studied. Based on the investigation, the trajectory tends to be different according to sizes and materials. The present work forms a basis for further investigation of heat transfer processes inside the HDD to address thermal management issues and also the computation of unsteady flow fields in the HDD due to the movement of the actuator arm during data storage and retrieval
Singapore-MIT Alliance (SMA)
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Book chapters on the topic "CFD, Software, FloEFD, Simulation"

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TAN, Engin, Ali Riza TARAKCILAR, and Derya DISPINAR. "Defect Analysis by Casting Simulation Software in Rolling Roll Manufactured by GGG70." In CFD Modeling and Simulation in Materials Processing, 213–18. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118364697.ch25.

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Chen, Zheng, and Jieyu Zhang. "Numerical Simulation on Solidification Structure of 30Cr2Ni4MoV Steel Under Different Temperature Gradient Using Procast Software." In CFD Modeling and Simulation in Materials Processing 2018, 3–8. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72059-3_1.

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Aramburu, Enric, and Roger Calvo. "Brake Cooling Simulation: A Combined Procedure of CFD, Thermal and 1D Software." In Lecture Notes in Electrical Engineering, 309–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33835-9_29.

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Motzigemba, M., H. C. Broecker, J. Prüss, D. Bothe, and H. J. Warnecke. "A contribution to simulation of mixing in screw extruders employing commercial CFD-software." In 10th European Conference on Mixing, 297–304. Elsevier, 2000. http://dx.doi.org/10.1016/b978-044450476-0/50038-8.

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Wang, Dingya, Wanli Zheng, Chao Wu, Keren Ren, and Rui Xiao. "Numerical simulation analysis of subsea gas-liquid hydrocyclone separator based on CFD software." In Chemical Engineering III, 45–51. CRC Press, 2013. http://dx.doi.org/10.1201/b16125-9.

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Nieto, J. P., B. Caussat, J. P. Couderc, C. Artufel, S. Coletti, L. Jeannerot, and O. Simonin. "Simulation of silica deposition in an atmospheric pressure chemical vapour deposition reactor, using a modified CFD software." In Computer Aided Chemical Engineering, 385–90. Elsevier, 2000. http://dx.doi.org/10.1016/s1570-7946(00)80066-8.

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Hasan, Nasim, Mohd Arif, and Mohaideen Abdul Khader. "Earth Air Tunnel Heat Exchanger for Building Cooling and Heating." In Heat Transfer - Design, Experimentation and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99348.

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The computational fluid dynamic (CFD) is an influential method for measuring Heat transfer profiles for typical meteorological years. CFD codes are managed by numerical algorithms that may undertake fluid glide headaches. CFD offers the numerical results of partial differential equations with main airflow and heat transfer in a discretized association. The complex fluid glide and the warmth transfer publications worried in any heat exchanger can be determined with the help of the CFD software program (Ansys Fluent). A study states and framework which implicitly rely on the computational fluid dynamics, which is being formulated for computing the efficiency-related parameters of the thermal part and the capability of the EATHE system for cooling. A CFD simulation program is being used for modeling the system. The framework is being validated with the help of the simulation set-up. A thermal model was developed to analyze thermal energy accumulated in soil/ground for the purpose of room cooling/heating of buildings in the desert (hot and dry) climate of the Bikaner region. In this study, the optimization of EATHE design has been performed for finding the thermal performance of straight, spiral, and helical pipe earth air tunnel heat exchanger and Heat transfer rate for helical pipe was found maximum among all designs.
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Boobalan, Chitra, Sudha Ganesh, and Parthiban Rangaswamy. "Analysis of Liquid Cooling in Microchannels Using Computational Fluid Dynamics (CFD)." In Heat Transfer - Design, Experimentation and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96248.

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Liquid cooling is an extremely successful process to remove excess heat generated, with the usual procedure of heat transfer using coolant in desktop PCs. In this regard, heat transfer with minimal size equipment can be achieved by the addition of nanosized solid particles to the base fluid. The hybrid nanofluid is synthesized by dispersing the synthesized mono nanofluid in a volume fraction of 0.2 iron oxide with 0.8 fractions of graphene nanofluid to form a graphene/iron oxide combination. These nanoparticles increase the heat transfer coefficient as they have high thermal conductivity when compared to conventional heat transfer fluids like water or ethylene glycol. Stability is increased and sedimentation is reduced because of the large surface area of a nanoparticle. FLUENT, the most widely used computational fluid dynamics (CFD) software package, based on the finite volume method, and is used to run the thermal simulations for estimating the base temperature of the heat sink. The scope of this chapter is to find the base temperature of the heat sink using simulations. The experimentally measured base temperature is 310.01 K and in the simulation, it is 310.81 K for the flow rate of 0.75LPM. All the simulated surface temperatures are compared with experimentally determined temperatures for simulation validation.
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Taler, Dawid, Jan Taler, and Marcin Trojan. "The CFD Based Method for Determining Heat Transfer Correlations on Individual Rows of Plate-Fin and Tube Heat Exchangers." In Heat Transfer - Design, Experimentation and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97402.

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The chapter provides an analytical mathematical model of a car radiator, which includes different heat transfer coefficients (HTCs) on the first and second row of pipes. The air-side HTCs in the first and second row of pipes in the first and second pass were calculated using the correlations for the Nusselt number, which were determined by CFD simulation using the ANSYS software. Mathematical models of two radiators were built, one of which was manufactured of round tubes and the other of oval tubes. The model permits the determination of thermal output of the first and second row of tubes in the first and second pass. The small relative differences between the thermal capacities of the heat exchanger occur for different and uniform HTCs. However, the heat flow rate in the first row is much greater than the heat flow in the second row if the air-side HTCs are different on the first and second tube row compared to a case where the HTC is uniform in the whole heat exchanger. The heat transfer rates in both radiators calculated using the developed mathematical model were compared with those determined experimentally. The method for modeling of plate-fin and tube heat exchanger (PFTHE) proposed in the paper does not require empirical correlations to calculate HTCs both on the air side and on the inner surfaces of pipes. The presented method of calculating PFTHEs, considering different air-side HTCs evaluated using CFD modeling, may considerably reduce the cost of experimental research concerning new design heat exchangers implemented in manufacturing.
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Conference papers on the topic "CFD, Software, FloEFD, Simulation"

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Biswas, Dipankar, Steven A. Lottes, Pradip Majumdar, and Milivoje Kostic. "Development of an Analysis Methodology for Pressure Flow Scour Under Flooded Bridge Decks Using Commercial CFD Software." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37198.

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Bridges are a significant component of the ground transportation infrastructure in the United States. With about sixty percent of bridge failures due to hydraulic causes, primarily scour, application of computational fluid dynamics (CFD) analysis techniques to the assessment of risk of bridge failure under flood conditions can provide increased accuracy in scour risk assessment at a relatively low cost. The analysis can be used to make optimum use of limited federal and state funds available to maintain and replace bridges and ensure public safety while traveling on the nation’s roads and highways during and after floods. Scour is the erosion of riverbed material during high flow conditions, such as floods. When scouring of the supporting soil around the piers and abutments of bridges takes place, risk of bridge failure increases. A simulation methodology to conservatively predict equilibrium shape and size of the scour hole under pressure flow conditions for flooded bridge decks using commercial CFD software was developed. The computational methodology has been developed using C++ to compute changes in the bed contour outside of the CFD software and generate a re-meshing script to change the bed boundary contour. STAR-CD was used to run the hydrodynamic analysis to obtain bed shear stress, and a BASH script was developed to automate cycling between computing bed shear stress with the CFD software and computing changes in the bed contour due to scour predicted using the computed shear stress for the current bed contour. A single-phase moving boundary formulation has been developed to compute the equilibrium scour hole contour that proceeds through a series of quasi-steady CFD computations. It is based on CFD analysis of the flow fields around the flooded bridge deck and shear stress computed at the bed modeled as a rough wall. A high Reynolds number k-ε turbulence model with standard wall functions, based on a Reynolds-Averaged Navier-Stokes (RANS) turbulence model, was used to compute bed shear stress. The scour sites on the bed were identified as those sites where the computed shear stress exceeded the critical shear stress computed from a published correlation for flat bed conditions. Comparison with experimental data obtained from the Turner-Fairbank Highway Research Center (TFHRC), McLean, VA, USA, revealed larger discrepancies than anticipated between the bridge inundation ratio and the scour hole depth. Although scour hole slopes were small for the cases tested, a correction to critical shear stress to account for bed slope was also tested. It did not significantly improve the correlation between CFD prediction and experimental observations. These results may be a consequence of using only excess shear stress above critical as a criteria for scour when other physical mechanisms also contribute to the initiation of scour. Prediction of scour depth using federal guidelines over predicts scour depth by as much as an order of magnitude in some cases. Over prediction is acceptable for purposes of ensuring bridge safety. CFD methods for scour prediction can be a significant improvement of current methods as long as under prediction of scour depth is avoided. Conservative scour prediction using CFD methods can be achieved by using conservative values of parameters such as critical shear stress and effective bed roughness.
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Manesh, H. F., and M. Hashemipour. "An Educational Software Package for CFD Simulation and Visualization." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37182.

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The development of the Virtual Reality (VR) techniques for visualizaton of the computational simulations of complex problem has opened some new avenues for heat transfer and fluid flow research. The importance of data visualization is clearly recognized for to better understanding of the 3-D nature of the flow fields. This work introduces the educational user friendly “VRJET” package designed for teaching fluid mechanics and heat transfer. A Software is developed with C++ standard Programming language using an object-oriented approach to visualize the flow field with high performance computing including advanced support for data presentation and navigation techniques through 3D virtual environment. This work deals with 3-D visualization of the data of impinging laminar single square jet on a heated flat surface, obtained from numerical simulation. This package can be used for research, educational, and engineering.
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Yuan, Youming, and David Hunt. "Rotating Annulus Component Performance Characterisation Based on CFD Analyses." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75158.

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FloMASTER is a 1-D thermo-fluids system simulation tool and its component models depend on the characterisation data of the component performance. Such performance data is mainly based on data banks established from extensive tests exemplified by the books like “Internal Flow” by Miller [1] and “Handbook of Hydraulic Resistance” by Idelchik [2]. One of the key components of the gas turbine secondary air system is the rotating annulus. However, reliable data and correlations for performance characteristics like pressure loss coefficient, torque coefficient, windage and heat transfer for this component are rare and non-existent in the open literature for the case of both walls rotating simultaneously, which is becoming more common in today’s multi-spool military aero engines. To overcome this challenge of lack of reliable performance data and correlations, in this paper the Mentor Graphics 3D CFD tool “FloEFD” is used to model both inner wall rotating and outer wall rotating annulus flow, and to verify the 3D CFD results of performance data in terms of pressure loss coefficient and torque coefficient versus some published test data in the open literature. It is shown that the CFD gives results on pressure loss and torque coefficients that are in good agreement with test data based correlations used in FloMASTER. This demonstrates that 3D CFD can be used as a powerful tool for verifying the existing 1D model, extending the 1D model performance data range and generating new performance data for developing new components where such data is not available from open literature. A future project is to extend this approach to provide performance data for rotating annuli with both walls rotating. Such data will form the basis for developing a new component model for a rotating annulus with both walls rotating.
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Zhang, Xiaofang, Shuzong Wang, and Wenli You. "1D and CFD Co-Simulation Approach Basing on General Purpose Simulation Software." In 2009 International Conference on Computational Intelligence and Software Engineering. IEEE, 2009. http://dx.doi.org/10.1109/cise.2009.5363598.

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Liu, Xiaoya, Ming Ding, Haozhi Bian, Changqi Yan, and Chun Li. "Numerical Study on Heat Transfer and Resistance of a Tube Fitted With New Twisted Tapes for Lubricating Oil." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-67766.

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Oil coolers are widely-used in nuclear power plants which cool oil flowed through the bearing of steam turbines to a suitable temperature in order for the safe operation of steam turbines. Owing to the high viscosity, the flow state of oil is generally laminar flow or transition flow, which easily leads to poor heat transfer capability and thus a large volume of the oil coolers. The insertion of twisted tapes in circular tube is a passive method widely-used for enhancing heat transfer of laminar or transition flow. However, little research focuses on the heat transfer of highly-viscous fluids inside tube using the twisted tapes. The article will present the numerical simulations of the swirling flow induced by a new coaxial cross twisted tape inserts in a heat transfer tube with lubricating oil. The effects of the clearance ratios and twist ratios on oil side heat transfer coefficient, friction factor and performance evaluation criterion will be numerically investigated using CFD computer software STAR-CCM+. The clearance ratios are 0.077, 0.154 and 0.231. The twist ratios are 2.0 and 4.0. The boundary condition of simulation is constant wall temperature for the Reynolds number ranging from 200 to 1300. The results indicate that the new coaxial cross twisted tapes are efficacious in enhancing the heat transfer of the lubricating oil inside tube. When the clear ratio is 0.077, the effect of heat transfer enhancement of the coaxial cross twisted tapes is better than that of traditional twisted tapes. Furthermore, the highest performance evaluation criterion is up to 2.3.
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Li, XiaoFeng, Junqing Zhou, Jun Shao, and Qian Zhang. "CFD-Based Simulation Analysis of Indoor and Outdoor Ventilation Environment." In 2010 International Conference on Computational Intelligence and Software Engineering (CiSE). IEEE, 2010. http://dx.doi.org/10.1109/cise.2010.5677146.

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Shah, Sanket. "Integration of 1D and 3D CFD Software for Cabin Cool Down Simulation." In WCX World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/2018-01-0773.

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Gong, Liyuan, and Xiuling Wang. "CFD Simulation of Highway Contaminant Dispersion." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65893.

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Vehicle emissions have been considered as a main source of air pollution contaminants. Air pollution is a severe problem which could cause many health issues, such as respiratory, infections, lung cancer, and heart disease, according to the World Health Organization (WHO). In urban area, highway transportation is the main and busy traffic that contains all types of vehicles and release multiple pollutants. Studies of highway contaminants influence have been carried out by different methods, such as field study, wind tunnel and computational fluid dynamics (CFD). Among all the methods, CFD is respectively both economical and accurate. For CFD method, in order to have a most accurate results, all the factors including terrain, wind profile, and other features in the studied area should be included. In this study, noise barrier effect is the main feature being analyzed. Different barrier heights were modelled and simulated in order to see the effect of barrier height. Situations with and without barriers were compared to get the general influence of noise barriers. Simulations were accomplished by using commercial software ANSYS 15.0. Simulated species are nitrogen oxides (NOx), including NO and NO2, carbon monoxide (CO). Double barriers configuration were modelled. A model of local high school system was built to see the difference of concentration in far wake region behind the barriers. Comparison has been made between with and without barriers. As the results of this study, a significant reduction was found in far wake area due to noise barriers. Effected flow distribution and contaminants concentration was found due to different barriers heights. Flow distribution and pollutants concentration has been depicted and analyzed. The effect has been analyzed by studying flow and wind velocity distribution.
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Wiart, Ludovic, and Frederic Moens. "Numerical Simulation of the NASA High-Lift Trap Wing with the elsA CFD Software." In 30th AIAA Applied Aerodynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-2918.

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Soltysiak, M., M. Celuch, and U. Erle. "Coupling between FDTD electromagnetic and FEM CFD software packages for simulation of microwave heating." In IET 8th International Conference on Computation in Electromagnetics (CEM 2011). IET, 2011. http://dx.doi.org/10.1049/cp.2011.0067.

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Reports on the topic "CFD, Software, FloEFD, Simulation"

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Duque, Earl, Steve Legensky, Brad Whitlock, David Rogers, Andrew Bauer, Scott Imlay, David Thompson, and Seiji Tsutsumi. Summary of the SciTech 2020 Technical Panel on In Situ/In Transit Computational Environments for Visualization and Data Analysis. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40887.

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At the AIAA SciTech 2020 conference, the Meshing, Visualization and Computational Environments Technical Committee hosted a special technical panel on In Situ/In Transit Computational Environments for Visualization and Data Analytics. The panel brought together leading experts from industry, software vendors, Department of Energy, Department of Defense and the Japan Aerospace Exploration Agency (JAXA). In situ and in transit methodologies enable Computational Fluid Dynamic (CFD) simulations to avoid the excessive overhead associated with data I/O at large scales especially as simulations scale to millions of processors. These methods either share the data analysis/visualization pipelines with the memory space of the solver or efficiently off load the workload to alternate processors. Using these methods, simulations can scale and have the promise of enabling the community to satisfy the Knowledge Extraction milestones as envisioned by the CFD Vision 2030 study for "on demand analysis/visualization of a 100 Billion point unsteady CFD simulation". This paper summarizes the presentations providing a discussion point of how the community can achieve the goals set forth in the CFD Vision 2030.
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Haehnel, Robert, Scott Christensen, J. Whitlow, Andrew Bauer, Ari Meyer, Gautham Rangarajan, Yonghu Wenren, et al. A computational prototyping environment interface for DoD CREATE™-AV Helios simulations. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40582.

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Computational Prototyping Environment (CPE) is a web-based portal designed to simplify running Department of Defense (DoD) modeling and simulation tools on the DoD Supercomputing Resource Center’s (DSRC) High Performance Computing (HPC) systems. The first of these tools to be deployed in the CPE is an application (app) to conduct parametric studies and view results using the CREATE-AV Helios CFD software. Initial capability includes hover (collective sweep) and forward flight (speed sweep) performance calculations. The CPE Helios app allows for job submission to a DSRC’s HPC system and for the viewing of results created by Helios, i.e., time series and volumetric data. Example data input and results viewing are presented. Planned future functionality is also outlined.
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Allen, Luke, Joon Lim, Robert Haehnel, and Ian Detwiller. Rotor blade design framework for airfoil shape optimization with performance considerations. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/41037.

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A framework for optimizing rotor blade airfoil shape is presented. The framework uses two digital workflows created within the Galaxy Simulation Builder (GSB) software package. The first is a workflow enabling the automated creation of a surrogate model for predicting airfoil performance coefficients. An accurate surrogate model for the rapid generation of airfoil coefficient tables has been developed using linear interpolation techniques that is based on C81Gen and ARC2D CFD codes. The second workflow defines the rotor blade optimization problem using GSB and the Dakota numerical optimization library. The presented example uses a quasi-Newton optimization algorithm to optimize the tip region of the UH-60A main rotor blade with respect to vehicle performance. This is accomplished by morphing the blade tip airfoil shape for optimum power, subject to a constraint on the maximum pitch link load.
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