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Journal articles on the topic 'ANSYS CFX'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 September 2023

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1

S Muttalli, Raghavendra, Shweta Agrawal, and Harshla Warudkar. "CFD Simulation of Centrifugal Pump Impeller Using ANSYS-CFX." International Journal of Innovative Research in Science, Engineering and Technology 03, no. 08 (August 15, 2014): 15553–61. http://dx.doi.org/10.15680/ijirset.2014.0308066.

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2

Vyavahare, Pranav, Lokavarapu Bhaskara Rao, and Nilesh Patil. "CFD Analysis of Double Suction Centrifugal Pump with Double Volute." Periodica Polytechnica Mechanical Engineering 62, no. 1 (December 21, 2017): 74. http://dx.doi.org/10.3311/ppme.11425.

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In this study, Computational Fluid Dynamics (CFD) Analysis is used to investigate the flow in the centrifugal pump impeller using the ANSYS-CFX. Impeller is designed for head of 22 m, discharge of 52.239 m3/hr and for the operating speed of 2970 RPM. Impeller vane profile is generated by tangent arc method and CFD analysis is performed for 1st stage of vertical pump out of 15 stages. Velocity and pressure distribution are analysed for casing and impeller. Using ANSYS-CFX head developed by this impeller is calculated and compared with the required value. From results of CFD analysis, performance curves are plotted and compared with analytical performance curves. Results obtained from CFD nearly matches with analytical results.

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Zhukov, Victor P. "Verification, Validation, and Testing of Kinetic Mechanisms of Hydrogen Combustion in Fluid-Dynamic Computations." ISRN Mechanical Engineering 2012 (August 13, 2012): 1–11. http://dx.doi.org/10.5402/2012/475607.

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A one-step, a two-step, an abridged, a skeletal, and four detailed kinetic schemes of hydrogen oxidation have been tested. A new skeletal kinetic scheme of hydrogen oxidation has been developed. The CFD calculations were carried out using ANSYS CFX software. Ignition delay times and speeds of flames were derived from the computational results. The computational data obtained using ANSYS CFX and CHEMKIN, and experimental data were compared. The precision, reliability, and range of validity of the kinetic schemes in CFD simulations were estimated. The impact of kinetic scheme on the results of computations was discussed. The relationship between grid spacing, time step, accuracy, and computational cost was analyzed.

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4

Yang, Li Feng, Shu Ren Zhang, W. N. Liu, Yu Yang, and Y. J. Zhang. "Application ANSYS CFX in Modeling Turbine Blade." Materials Science Forum 626-627 (August 2009): 593–98. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.593.

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The main component of turbine is made up of stator and rotor, w hose function is to transform liquid energy in to mechanical energy on the main shaft. ANSYS CFX－BladeGen is applied to model turbine , ANSYS CFX－TurboGrid is applied to create a mesh for an turbine blade and then numerical simulation calculation on the obtained model is conducted. In the fact, the result of the above calculation indicates that ANSYS CFX BladeGen is more convenient and swift to fulfill the modeling request of turbine blade. When the performance of the turbine blade is achieved, these blades’ geometric data can be directly exported to Pro/ENGINEER or AutoCAD so as to further CAD and CAM.

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Martirosyan, A. A., V. I. Mileshin, Ya M. Druzhinin, and P. G. Kozhemyako. "Сomputational and Experimental Investigation of Aerodynamic Characteristics of a Counter-Rotating fan Using Various Software Packages." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 2 (125) (April 2019): 115–30. http://dx.doi.org/10.18698/0236-3941-2019-2-115-130.

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The paper presents the results of computing aerodynamic properties of the CRTF2A counter-rotating cowled fan developed as part of the European VITAL program. To achieve these results, we used the following software packages: NUMECA FINE TURBO, ANSYS CFX and CIAMs own 3D--IMP--MULTI hydrocode. We use the RANS approach to model turbulent flows. We performed a three-dimensional computation, completing Reynolds-averaged Navier --- Stokes equations by various turbulence models for the following relative angular frequency modes: n = 1 and 0.9. We used the following turbulence models available in the software packages: k--ε (ANSYS CFX, 3D--IMP--MULTI), k--ε (ANSYS CFX, NUMECA FINE TURBO, 3D--IMP--MULTI), SST (NUMECA FINE TURBO, ANSYS CFX, 3D--IMP--MULTI). We plotted head characteristics for each software package and determined the main differences. We plotted adiabatic efficiency and total pressure ratios as functions of height for the first and second rotors at the maximum efficiency points for both modes in the ANSYS CFX, NUMECA FINE TURBO and 3D--IMP--MULTI software packages

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6

Khonsha, B., G. Jahanfarnia, K. Sepanloo, M. Nematollahi, and I. Khonsha. "ANSYS-CFX simulation of the SRBTL test loop core with nanofluid coolant." Kerntechnik 86, no. 6 (December 1, 2021): 445–53. http://dx.doi.org/10.1515/kern-2020-0059.

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Abstract In the present study, CFD calculations are presented for the three types of water-based nanofluids Al2O3/water, CuO/water and TiO2/water with 0.1% volume fraction. These calculations are done with ANSYS-CFX and as geometry the SRBTL test loop as scaled down test loop for a VVER-1000 reactor core design is used. The goal of this study is to evaluate the CFD program against the SRBTL test loop core as a scaled core for applying water-based nanofluids as coolant. ANSYS-CFX simulation data are validated against the RELAP5/MOD3.2 simulation data for pure water. This comparison shows a good agreement. The simulation results for the nanofluids and water including Re number, temperature, viscosity, pressure drop and heat transfer coefficient through the SRBTL test loop core are compared. The results of the comparisons show that the SRBTL test loop core is suitable to extract experimental data of water-based nanofluids for using them as coolant in the VVER-1000 reactor.

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7

Wang, Da Zheng, Dan Wang, Lei Mei, and Wei Chao Shi. "The Hydrodynamic Analysis of Propeller Based on ANSYS-CFX." Advanced Materials Research 694-697 (May 2013): 673–77. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.673.

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In this paper, the open water performance of a pod propeller in the viscous flow fields is numerically simulated by the Computational Fluid Dynamics (CFD) method. Based on the coordinate transformation formula for transforming the local to the global coordinate, mathematical model of a propeller is created. Thrust and torque coefficients corresponding to different advance coefficients of the model are calculated by ANSYS-CFX with three different turbulence models. The pressure distributions on the blade surface are also presented. Comparisons show that experimental results and numerical results agree well, with SST k-ω and RNG k-ε more accurate than the standard k-ε.

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8

Palko, Milan. "Physical Assessment of a Window Using a Computer Simulation." Advanced Materials Research 855 (December 2013): 93–96. http://dx.doi.org/10.4028/www.scientific.net/amr.855.93.

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The simulation program ANSYS and its use in the simulation of a window. Code implementation of Fluent and CFX programs. ANSYS program structure in CFX module. Computer simulation of aluminum windows - simple heat conduction. Computer simulation of wooden windows - the transfer of heat through conduction and convection. Simulation method "Fluid - Solid Interaction (FSI).

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9

Höhne, Thomas. "CFD Simulation of Thermal-Hydraulic Benchmark V1000CT-2 Using ANSYS CFX." Science and Technology of Nuclear Installations 2009 (2009): 1–7. http://dx.doi.org/10.1155/2009/835162.

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Plant measured data from VVER-1000 coolant mixing experiments were used within the OECD/NEA and AER coupled code benchmarks for light water reactors to test and validate computational fluid dynamic (CFD) codes. The task is to compare the various calculations with measured data, using specified boundary conditions and core power distributions. The experiments, which are provided for CFD validation, include single loop cooling down or heating-up by disturbing the heat transfer in the steam generator through the steam valves at low reactor power and with all main coolant pumps in operation. CFD calculations have been performed using a numerical grid model of 4.7 million tetrahedral elements. The Best Practice Guidelines in using CFD in nuclear reactor safety applications has been used. Different advanced turbulence models were utilized in the numerical simulation. The results show a clear sector formation of the affected loop at the downcomer, lower plenum and core inlet, which corresponds to the measured values. The maximum local values of the relative temperature rise in the calculation are in the same range of the experiment. Due to this result, it is now possible to improve the mixing models which are usually used in system codes.

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10

Śliwa, Tomasz, Andrzej Gołaś, Jerzy Wołoszyn, and Andrzej Gonet. "Numerical Model of Borehole Heat Exchanger in Ansys CFX Software / Numeryczny Model Otworowego Wymiennika Ciepła W Pakiecie Ansys Cfx." Archives of Mining Sciences 57, no. 2 (November 12, 2012): 375–90. http://dx.doi.org/10.2478/v10267-012-0024-3.

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Abstract The paper presents the results of numerical simulation of thermal response test (TRT) and the results of the experiment of TRT in Johan Paul the second Centre “Have No Fear!” in Cracow. The aim of the study is to determine and compare the values of effective thermal conductivity of rocks obtained in TRT experiment with the results obtained from the numerical simulation of TRT. The results are shown as graphs of temperature variation in the time on inlet and outlet of the borehole heat exchanger (BHE) and as drawings of thermal distribution. Borehole heat exchanger is constructed of a single u-tube at a depth of 180 m. In the numerical simulation of TRT was included geological profile of the rock mass and the associated changes in thermal properties of rocks. Temperature dependence of liquid viscosity were also adopted. Groundwater flow has been neglected. Presented mathematical model based on energy balance equation, Navier-Stokes equation and flow continuity equation was solved using the finite volume method. To numerical calculation was used ANSYS CFX software.

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11

Yaakob, Omar, Yasser M. Ahmed, and M. Rizal Othman. "Use of CFD to Study the Resistance of Sprint Master Canoe." Applied Mechanics and Materials 695 (November 2014): 463–67. http://dx.doi.org/10.4028/www.scientific.net/amm.695.463.

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The resistance and the hydrodynamic characteristics of the Sprint Master canoe that is used in Universiti Teknologi Malaysia (UTM) have been studied at different speeds using Computational Fluid Dynamics (CFD) method. The resistance of the canoe at different speeds has been measured in UTM marine technology center (MTC). The finite volume code Ansys CFX has been used for carrying out the numerical simulations for the hull form of the canoe at the same experimental speeds. The Volume of Fluid method (VOF) has been used with Ansys CFX for capturing the free surface flow around the canoe hull at the same experimental speeds. The Shear Stress Transport (SST) turbulence model has been used in the RANSE code. The grid generator ICEM CFD has been used for building the grids for the RANSE code solver. The numerical results compare very well with the experimental results at the different speeds.

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12

Goga, Vladimír, Juraj Paulech, and Michal Váry. "Cooling of Electrical Cu Conductor with PVC Insulation – Analytical, Numerical and Fluid Flow Solution." Journal of Electrical Engineering 64, no. 2 (March 1, 2013): 92–99. http://dx.doi.org/10.2478/jee-2013-0013.

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This paper describes calculation of cooling process of electrical Cu conductor with PVC insulation. Three types of solutions were performed.Analytical solution considers free convection and radiation effect of heat transfer. Numerical solution was performed by finite element method (FEM) using software ANSYS Workbench and fluid flow solution was performed by computational fluid dynamics (CFD) analysis in software ANSYS CFX. Results from all types of solutions were compared with results of the experimental measurement.

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13

Moncalvo, D., L. Friedel, B. Jörgensen, and T. Höhne. "Nachrechnung der Leistungsparameter eines Sicherheitsventils mit ANSYS CFX." Forschung im Ingenieurwesen 73, no. 2 (May 28, 2009): 99–103. http://dx.doi.org/10.1007/s10010-009-0096-1.

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14

Klyuyev, A. S., Y. I. Chernyshev, E. A. Ivanov, and I. O. Borshchev. "Comparison of Jet Pump Numerical Calculation Results in ANSYS and Openfoam CFD Packages." E3S Web of Conferences 320 (2021): 04017. http://dx.doi.org/10.1051/e3sconf/202132004017.

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Currently, among the most popular computational fluid dynamics software packages are commercial CFD packages – ANSYS CFX, ANSYS Fluent, STAR-CCM+ and several others. In contrast to the above-mentioned commercial CFD packages, there is an OpenFOAM, a non-commercial, freely distributed, integrated platform for numerical modeling of solid-state mechanics tasks (including CFD tasks), and it is becoming more and more popular. In addition to being a non-commercial package, OpenFOAM also has open-source code, which allows users to write their own algorithms for solving highly specialized tasks. A comparison of ANSYS and OpenFOAM in the application to CFD problems of incompressible turbulent flow in this article is given by the example of jet pump calculation, which was tested in the Laboratory of Hydraulic Machinery of Peter the Great St.Petersburg Polytechnic University.

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15

Brestovič, Tomáš, and Natália Jasminská. "SOFTWARE SUPPORT DEVELOPMENT FOR NUMERICAL SOLUTION OF ANSYS CFX." Acta Mechanica et Automatica 7, no. 4 (December 1, 2013): 215–21. http://dx.doi.org/10.2478/ama-2013-0036.

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Abstract The paper deals with possibilities to apply a new developed software support for simulation programme ANSYS CFX. A direct export of heat-transfer coefficients into variables used under edge conditions as well as of physical properties of gas mixtures into material properties during simulation solution of technical tasks means a significant saving of time. The paper summarizes in detail description of the software for calculation of heat-transfer coefficient during free convection (HTC-FC) and of material properties of gas mixture (MPGM) that enable to export calculated data directly into the text files which can be imported then into the programme ANSYS CFX.

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16

Hohne, Thomas. "ICONE15-10259 CFD-SIMULATION OF THERMAL HYDRAULIC BENCHMARK V1000CT-2 USING ANSYS CFX." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_128.

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17

Li, Cheng Wu, Wei Yang, Bei Jing Xie, Xu Cao, and Guo Dong Mei. "Numerical Simulation on Hazardous Area Distribution after Gas Outburst in Coal Uncovering Construction of Hydropower Station." Applied Mechanics and Materials 212-213 (October 2012): 989–97. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.989.

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The dynamic risk of underground cavities after gas outburst in coal uncovering construction of hydropower station was emphatically analyzed. The tunnel construction conditions in Xiangjiaba hydropower station were taken as an example. Based on the computational fluid dynamics theory and gas outburst theory, this paper used the ANSYS CFX CFD code to model the gas diffusion after gas outburst. The space-time characteristics of underground cavities dynamic risk were analyzed. The results show that the danger area ranges of gas explosion and asphyxia reach respectively the maximum value at about 140s and 50s. The influence range and duration of the former are significantly higher than the latter. The direction of hazardous area movement is mainly consistent with the air flow direction. ANSYS CFX simulation can visually display dynamic risk of underground cavities, and has a good prospect in gas hazard prevention in hydraulic and hydroelectric engineering.

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18

Zhiltsov, Yuriy, and Viktor Elshin. "ANSYS CFX SOFTWARE APPLICATION FOR PULVERIZED COAL BURNER SIMULATION." Proceedings of Irkutsk State Technical University 21, no. 4 (April 2017): 75–80. http://dx.doi.org/10.21285/1814-3520-2017-4-75-80.

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19

Burkov, Ivan A., Aleksandr V. Pushkarev, Alexey V. Shakurov, Dmitry I. Tsiganov, and Anatoly A. Zherdev. "Numerical thermal simulation of cryoexposure using Ansys." MATEC Web of Conferences 324 (2020): 01002. http://dx.doi.org/10.1051/matecconf/202032401002.

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The current advances and problems of medical cryoexposure thermal simulation are considered. Recommendations on improving geometric models, thermophysical properties, boundary conditions, and for parameterizing of the computational domain are proposed. These recommendations can be applied to most modern FEA software packages (tested in Ansys CFX 19.2). Examples of cryoablation and cryotherapy simulation are presented.

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20

Grübel, Marius, Jörg Starzmann, Markus Schatz, and Damian M. Vogt. "Modelling of condensing steam flows in Laval nozzles with ANSYS CFX." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 5 (September 11, 2017): 571–75. http://dx.doi.org/10.1177/0957650917730664.

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The results of the International Wet Steam Modelling Project presented at the Wet Steam Conference in Prague in 2016 again gave rise to a discussion about the suitability of the flow solver ANSYS CFX for the prediction of spontaneous condensation. In this article, the main reason for the discrepancy between results obtained with CFX and measurement data is identified. It could be found that in CFX the temperature of already existing droplets is used for evaluating the fluid properties involved in the nucleation process. This is not in agreement with the isothermal classical nucleation theory, which is based on the assumption that clusters of critical radius are formed at vapour temperature. The most dominant parameter affected by this is the surface tension, the evaluation of which can be altered easily by the user. The influence of the correction is illustrated by means of standard Laval nozzle test cases, and a significant improvement of the results compared to measurement data can be observed.

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Tang, Ji Wu, Mike Xie, and Peter Felicetti. "Topology Optimization of Building Structures Considering Wind Loading." Applied Mechanics and Materials 166-169 (May 2012): 405–8. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.405.

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The latest developments in structural topological optimization have been integrated with CFD for the optimization of building structures considering wind loading. Wind loads on a building are numerically simulated in ANSYS CFX and then transferred to ANSYS Static to get the structural response of the building in wind. The bi-directional evolutionary structural optimization (BESO) algorithm has been applied to buildings for an automatic structural topological optimization considering wind loading. The proposed approach is demonstrated by examples of the optimum structural design of exterior bracing system of a high-rise building.

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22

Matej, Kurilla, Knížat Branislav, and Olšiak Róbert. "Approach to 3D Unsteady CFD Analysis of a Single-Blade Pump." MATEC Web of Conferences 328 (2020): 02016. http://dx.doi.org/10.1051/matecconf/202032802016.

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Single-blade centrifugal pumps are hydraulic machines used in many industrial areas. A unique screw shaped blade enables liquids containing solids and fibrous matters to be pumped. Owing to good pump hydraulic properties on the one hand and unfavourable impeller mechanical properties on the other have single-blade pumps become recently more interesting for researchers regarding the CFD simulations. In this case a conventional CFD approach for multi-blade pumps cannot be applied due to the lack of symmetry of the single-blade impeller. Possible approaches to the CFD simulation of a single-blade impeller in the Ansys Fluent and the Ansys CFX are compared in this paper. A comparison of two CFD meshing tools showed substantial element number decrease of the whole CFD model. This paper presents also the laboratory experiment results of the investigated single-blade pump. The paper describes a new approach to the single-blade CFD simulation through Ansys Fluent which is faster and more user-friendly then the conventional approach.

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23

Nosrati, Kourosh, Ahmad Tahershamsi, and Seyed Heja Seyed Taheri. "Numerical Analysis of Energy Loss Coefficient in Pipe Contraction Using ANSYS CFX Software." Civil Engineering Journal 3, no. 4 (April 30, 2017): 288–300. http://dx.doi.org/10.28991/cej-2017-00000091.

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The purpose of this study is the numerical analysis of energy loss coefficient in pipe contraction using ANSYS CFX software. To this end, the effect of the dimensionless parameters of Euler number, Reynolds number, and relative roughness on energy loss coefficient has been investigated and eventually an overall formula to determine the energy loss coefficient in these transitions has been provided. In order to solve the fluid turbulence equations in the pipe, standard K-Epsilon model has been used. For this purpose, first the geometry of pipe transitions was designed in 3-D, using Solid Works software, and then the transitions were meshed by ANSYS MESHING. The initial simulation of transitions including boundary conditions of outlet, inlet and wall, was carried out by a pre-processor called CFX-PRE. Furthermore, to solve the equations governing the fluid flow in the pipes (Navier-Stokes equations) the CFX-SOLVER was used. And finally, the results were extracted using a post-processor called CFD-POST.The results indicated that the energy loss coefficient, contrary to the findings of previous researchers, is not only related to transition geometry, but also is dependent on the Reynolds number, relative roughness of the wall and Euler number. By increasing the Reynolds Number and turbulence of fluid flow in transitions, the energy loss coefficient is reduced. Moreover, by increasing the relative roughness in the transition’s wall the energy loss coefficient is reduced. The increase in pressure fluctuation causes the increase of Euler number which leads to the linear increase of energy loss coefficient.

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24

Ovsepian, E. E., E. L. Leusheva, and V. A. Morenov. "Drilling mud upward velocity modelling in Ansys CFX software." IOP Conference Series: Earth and Environmental Science 931, no. 1 (December 1, 2021): 012020. http://dx.doi.org/10.1088/1755-1315/931/1/012020.

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Abstract Drilling mud has various functions, one of which is to carry cuttings to the surface. All other things being equal, the removal of cuttings is characterized by the upward velocity. This paper simulates the rheology of polymer-glycolic non-dispersing mud (in particular viscosity) to achieve the required upward velocity in the «Ansys CFX» software. The viscosity of the mud varies from 6 to 12 mPa·s, on production casing drilling in Arctic conditions. The results of the study showed that for such conditions, the viscosity should be in the range from 6 to 8 mPa·s.

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25

Moncalvo, D., L. Friedel, B. Jörgensen, and T. Höhne. "Sizing of Safety Valves Using ANSYS CFX-Flo®." Chemical Engineering & Technology 32, no. 2 (February 2009): 247–51. http://dx.doi.org/10.1002/ceat.200800530.

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26

Chandra, Neeraj, Pratik Kumar Singh, Vishal Kadian, and Suraj Rai. "Evaluation of Wind Effects on High-Rise Buildings Using Ansys CFX." Journal of Engineering Research and Application 02 (2023): 01–11. http://dx.doi.org/10.55953/jera.2023.2101.

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Tall building is the growing pattern of cities, these buildings are highly vulnerable to wind loads. Wind load effects on the high-rise building can be found using wind tunnel testing and CFD tools. Wind tunnel facilities are limited all around the world, so CFD tools can be incorporated. In this study, ANSYS CFX is used to investigate the effects of wind on different shapes of high-rise buildings. The results of numerical simulation are compared with the international standards of various countries. Streamline patterns and pressure contours on different faces are discussed in this paper. It is found that building shape and size are having a direct effect on the pressure distribution on various surfaces of the building model. Windward face pressure will always be positive in nature. In this study, the comparison is presented for the variation in the cross-sectional shape of the building model. For this purpose Model C and Model I are having considerable variations and Model X is considered for validation purposes only. It is well established that the results are within the allowable limit. This paper aims to discuss these windgenerated effects in the tall building model.

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Burmistrov, A., A. Raykov, S. Salikeev, and E. Kapustin. "Modelling of working processes of non-contact oil free vacuum pumps by computational fluid dynamics (CFD) methods." Journal of Physics: Conference Series 2059, no. 1 (October 1, 2021): 012003. http://dx.doi.org/10.1088/1742-6596/2059/1/012003.

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Abstract Numerical mathematical models of non-contact oil free scroll, Roots and screw vacuum pumps are developed. Modelling was carried out with the help of software CFD ANSYS-CFX and program TwinMesh for dynamic meshing. Pumping characteristics of non-contact pumps in viscous flow with the help of SST-turbulence model were calculated for varying rotors profiles, clearances, and rotating speeds. Comparison with experimental data verified adequacy of developed CFD models.

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Jakubec, Jakub, Juraj Paulech, Vladimír Kutiš, and Gabriel Gálik. "Influence of Bypass on Thermo-Hydraulics of VVER 440 Fuel Assembly." Strojnícky casopis – Journal of Mechanical Engineering 67, no. 1 (April 1, 2017): 69–76. http://dx.doi.org/10.1515/scjme-2017-0007.

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AbstractThe paper deals with CFD modelling and simulation of coolant flow within the nuclear reactor VVER 440 fuel assembly. The influence of coolant flow in bypass on the temperature distribution at the outlet of the fuel assembly and pressure drop was investigated. Only steady-state analyses were performed. Boundary conditions are based on operating conditions. ANSYS CFX is chosen as the main CFD software tool, where all analyses are performed.

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Turki AWAD, Afrah, and Kamal Jalal Tawfeeq ALBAZZAZ. "NUMERICAL INVESTIGATION OF A HIGH-TEMPERATURE ENERGY STORAGE." MINAR International Journal of Applied Sciences and Technology 4, no. 4 (December 1, 2022): 133–46. http://dx.doi.org/10.47832/2717-8234.13.12.

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Nitrate solar salt had been analyzed as a storage medium for the applications of the hightemperature solar energy storage system. The numerical investigation of the storage system would save time, cost, and effort. In this study, a simulation study using ANSYS CFX software was utilised. This study was validated against an experimental setup, which was designed for heat transfer study of storage material. An Ansys-CFX code that is built and developed to simulate the phase change material (PCM) inside the storage system, was presented. The developed model was validated against experimental data using the same dimensions of the storage system and the same storage material (Case 1 was PCM (only nitrate solar salt; KNO3: NaNO3 by 40:60 molar ratio) and case 2 was nano-PCM (0.5 wt.% Fe2O3+ nitrate solar salt)). This validation ensured the feasibility of using CFD as a design tool. According to Ziskind (2021), the enthalpy porosity techniques can be defined as apparent analogy between the liquid state of PCM inside the mushy zone and the following fluid flow into a porous medium. This techniques had been implemented in the CFX code to show the charging process of the phase change material. It was shown that the natural convection effect was presented in the liquid phase during the charging process. In addition, nano-PCM shows an improvement of charging process by 17.021%. According to the transient temperature measurements, it was found that there was a good match between the experimental data and the data from the CFX code with error less than 5%. Keywords: CFX Code, Simulation Study, Improved Heat Transfer, Charging Processes, HighTemperature Solar Energy Storage System

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Kalinkevych, Mykola, and Oleg Shcherbakov. "Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage." ISRN Mechanical Engineering 2013 (September 24, 2013): 1–9. http://dx.doi.org/10.1155/2013/602384.

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This paper presents the results of numerical investigation of the flow in a vaneless diffuser of centrifugal compressor stage. Simulations were performed using both a commercial CFD package ANSYS CFX and the own-designed computer program. Steady conditions involving SST turbulence model were used for the calculations using CFX. To consider the interaction between impeller and diffuser, not just a diffuser but the whole stage was calculated. The own-designed methodology is based on solving of conservation equations with assumptions that flow in a diffuser is steady state and axisymmetric. The flow area is divided into the flow core and boundary layers. Results of calculation were compared with experimental data.

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Krepper, E., P. Ruyer, M. Beyer, D. Lucas, H. M. Prasser, and N. Seiler. "CFD Simulation of Polydispersed Bubbly Two-Phase Flow around an Obstacle." Science and Technology of Nuclear Installations 2009 (2009): 1–12. http://dx.doi.org/10.1155/2009/320738.

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This paper concerns the model of a polydispersed bubble population in the frame of an ensemble averaged two-phase flow formulation. The ability of the moment density approach to represent bubble population size distribution within a multi-dimensional CFD code based on the two-fluid model is studied. Two different methods describing the polydispersion are presented: (i) a moment density method, developed at IRSN, to model the bubble size distribution function and (ii) a population balance method considering several different velocity fields of the gaseous phase. The first method is implemented in the Neptune_CFD code, whereas the second method is implemented in the CFD code ANSYS/CFX. Both methods consider coalescence and breakup phenomena and momentum interphase transfers related to drag and lift forces. Air-water bubbly flows in a vertical pipe with obstacle of the TOPFLOW experiments series performed at FZD are then used as simulations test cases. The numerical results, obtained with Neptune_CFD and with ANSYS/CFX, allow attesting the validity of the approaches. Perspectives concerning the improvement of the models, their validation, as well as the extension of their applicability range are discussed.

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Ali, Majid, Chang Qi Yan, Zhong Ning Sun, Jian Jun Wang, and Athar Rasool. "CFD Simulation of Throat Pressure in Venturi Scrubber." Applied Mechanics and Materials 170-173 (May 2012): 3630–34. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3630.

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In nuclear power plant (NPP), particulate matter and gaseous pollutant release into the environment in severe accidents. To prevent from this disaster, filtered vented containment system (FVCS) containing venturi scrubber is being installed. The present work herein is the CFD simulation of throat pressure in venturi scrubber. A commercial software ANSYS CFX tool has been selected for this research. Euler-Euler regime is used to get the picture of behavior of fluid dynamics inside the venturi scrubber. Gas and liquid interact with each other in throat section of venturi scrubber. The pressure at the throat is one of the important factors to analyze the performance of venturi scrubber. In order to verify the results, mesh independency is checked. CFX and experimental results show good agreement with each other. The results obtained from CFX simulation are useful to improve the venturi design.

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Montúfar Paz, Paúl, Rodrigo Rigoberto Moreno Pallares, Luis Santiago Choto Chariguaman, Luis Fernando Buenaño Moyano, and Miguel Angel Escobar Guachambala. "ANÁLISIS DEL COMPORTAMIENTO ACÚSTICO Y OPTIMIZACIÓN DEL MATERIAL DEL ESCAPE DE AUTOMÓVILES LIVIANOS EQUIPADOS CON TURBO COMPRESOR MEDIANTE HERRAMIENTAS DE DINÁMICA DE FLUIDOS COMPUTACIONALES." Ciencia Digital 2, no. 3 (September 11, 2018): 550–68. http://dx.doi.org/10.33262/cienciadigital.v2i3.175.

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En el presente proyecto de investigación se desarrolló en un pre-silenciador y silenciador del vehículo Zotye T600 ensamblado por CIAUTO en la ciudad de Ambato, un análisis de mecánica computacional de fluidos y acústico mediante ingeniería asistida por ordenador con el software ANSYS CFX y ANSYS ACT respectivamente. En primer lugar, se generó la geometría por medio de levantamiento de planos y escaneo 3D con la ayuda del software CAD SpaiceClaim. Los parámetros de entrada para las simulaciones tales como velocidad, temperatura y velocidad de giro del motor corresponden a valores recolectados mediante instrumentos de medición adecuados, en las versiones 1,5T y 2,0T del vehículo. En segundo lugar, se realizó la simulación CFD en ANSYS CFX puesto que es el solver de ANSYS más completo en transferencia de calor en interfaz fluido-sólido para analizar, de acuerdo a los resultados obtenidos en el silenciador se plantearon varias alternativas de diseño las mismas que fueron evaluadas en su funcionamiento y seleccionadas 2 de ellas, comparadas con el original por medio de CFD y la gráfica de pérdida de transmisión, determinando de esta manera las ventajas y desventajas de las alternativas. Se observó en la simulación acústica con respecto a la gráfica de pérdida de transmisión que no existe una diferencia significativa entre el diseño original y las alternativas, como consecuencia de esto se concluyó que las alternativas producen un beneficio sin un aumento significativo del ruido producto de la combustión del motor. Cabe recalcar que la generación y evaluación de alternativas mediante software CAE no reemplazan las pruebas experimentales las cuales deben realizarse, sin embargo, ayuda a la simplificación del proceso de prototipado.

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Suh, Jungsoo, and Huiun Ha. "Numerical Simulation of Marviken Free Jet Experiment Using ANSYS CFX." Transactions of the KSME C Industrial Technology and Innovation 7, no. 1 (March 31, 2019): 9–14. http://dx.doi.org/10.3795/ksme-c.2019.7.1.009.

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Zhiltsov, Yuri V., and Viktor V. Elshin. "USE OF ANSYS CFX SOFTWARE FOR COMBINED BOILER MODEL DEVELOPMENT." Proceedings of Irkutsk State Technical University 21, no. 3 (March 2017): 81–90. http://dx.doi.org/10.21285/1814-3520-2017-3-81-90.

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Yangyozov, Anastas Todorov, Damjanka Stojanova Dimitrova, and Lazar Georgiev Panayotov. "Modeling and performance calculation of a horizontal axis wind and hydrokinetic turbine: Numerical study." ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA 2, no. 2 (December 21, 2018): 70–79. http://dx.doi.org/10.29114/ajtuv.vol2.iss2.95.

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A small turbine, working with air and water to generate electricity, was designed and its performance was reported in this paper. The rotor diameter is 150mm. The numerical calculations of the power coefficient, torque, and tip speed ratio of turbine were carried out for a wide range of inlet velocities. The flow passing through the turbine was investigated with commercial CFD code ANSYS CFX 18

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Lee, Gong Hee, and Ae Ju Cheong. "CFD Analysis for the Turbulent Flow Distribution in a Fuel Assembly with the Split-Type Mixing Vanes by Using the Advanced Scale-Resolving Turbulence Models." Applied Mechanics and Materials 752-753 (April 2015): 902–7. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.902.

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In general, the turbulent flow inside PWR (Pressurized Water Reactor) fuel assembly depends on the mixing vane configuration and the pattern of the mixing vane arrangement on the strap of the spacer grid. In this study, in order to examine the turbulent flow structure inside fuel assembly with the split-type mixing vanes, simulations were conducted with the commercial CFD (Computational Fluid Dynamics) software, ANSYS CFX R.14. Two different types of turbulence models, i.e. SAS (Scale-Adaptive Simulation)-SST (Shear Stress Transport) and DES (Detached Eddy Simulation), were used. The predicted results were compared with the measured data from the MATiS-H (Measurement and Analysis of Turbulent Mixing in Subchannels-Horizontal) test facility. Although there were locally differences between the prediction and the measurement, ANSYS CFX R.14 predicted the time averaged velocity field in the reliable level. The predicted horizontal and vertical velocity components were more in agreement with the measured data than the axial velocity component. There was no significant difference in the prediction accuracy of both turbulence models.

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De Souza, Marina Andreia, Thais Feiden, Thais Comin, and Cristiano Vitorino Da Silva. "Simulação computacional de secador por pulverização usando ANSYS CFX®." Brazilian Journal of Food Research 11, no. 3 (January 1, 2020): 27. http://dx.doi.org/10.3895/rebrapa.v11n3.14769.

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A secagem de soluções por atomização, nos diversos setores industriais, é amplamente empregada. Entretanto, a otimização do processo, em sua grande maioria, é realizada de modo empírico e implica em certo custo às empresas, além do tempo despendido com testes experimentais. O objetivo do estudo foi observar a variação da temperatura do gás e da fração de massa do vapor de água, e de valores médios do diâmetro das gotas e sua temperatura no secador de pulverização, bem como à medida que a temperatura e o tamanho da água individual diminuem à medida que viajam através do secador de spray dryer. A modelagem e simulação de tais processos de secagem surge como ferramenta no auxílio à otimização, permitindo que diversos parâmetros sejam estudados e variados e, portanto, que a influência de cada um desses parâmetros no sistema seja estimada. Sua principal vantagem é a possibilidade de aperfeiçoar processos, gerando uma economia de custos e melhoria da qualidade dos produtos. Esta ferramenta tem sido muito empregada em estudos que investigam o efeito do escoamento de ar no interior de spray dryers. Desta forma, para compreender como é feita a simulação em CFD, utilizou-se uma malha pronta de um modelo de um secador por pulverização, e a partir dos dados fornecidos realizou-se uma simulação por meio do software ANSYS CFX versão 18.1. Os resultados da simulação foram promissores, sendo comparados para levar a um melhor entendimento da operação do secador por spray.

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Gadelha, A. J. Ferreira, T. R. Nascimento Porto, T. H. Freire de Andrade, Severino Rodrigues de Farias Neto, and A. G. Barbosa de Lima. "Thermo-Fluid Dynamic of Gaseous Pollutant Dispersion: Fundamentals and Applications in Thermal Power Plants." Diffusion Foundations 20 (December 2018): 34–54. http://dx.doi.org/10.4028/www.scientific.net/df.20.34.

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This work focuses on the pollutant dispersion problem with particular reference to thermal power plants. A powerful mathematical modeling to predict gaseous pollutant concentration at atmosphere and different CFD simulations results by Ansys CFX®software are presented. The gaseous pollutant dispersion was evaluated by analyzing of different process parameters as wind velocity, gas emission rate and temperature. The study confirms wind velocity as main variable that strongly affecting dispersion phenomena.

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Proskurin, Andrey, and Yulia Zheglova. "ANSYS CFX STUDY OF AERODYNAMIC CHARACTERISTICS DURING BLADE PROFILE ROTATION." International Journal for Computational Civil and Structural Engineering 17, no. 4 (December 26, 2021): 153–60. http://dx.doi.org/10.22337/2587-9618-2021-17-4-153-160.

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Currently, wind energy is one of the most developing areas, which is primarily due to the absence of emissions of harmful substances into the atmosphere. Wind power allows providing electricity to remote areas, where fuel delivery, as well as the construction of thermal power plants is laborious and expensive. The effective development of wind turbines should solve the following tasks: the creation of the necessary driving force and the possibility of using a high coefficient of wind energy, which does not contradict the maintenance of the ecological balance of the territory. An electric generator for a household wind turbine must provide electricity in a wide range of rotation speeds and be able to work independently without automation and external energy sources. The study of the numerical implementation of the method of aerodynamic analysis of the wind turbine blade in rotational motion in the ANSYS CFD software package is by far the most promising and dynamically developing direction in the field of aerodynamics calculations. The results of approbation of the mixed calculation method using a dynamically variable and stationary finite-volume mesh are presented. The use of a mixed design scheme allows for calculations of wind turbines inside the building, while it becomes possible to minimize the required power for the study.

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Ekambara, Kalekudithi, R. Sean Sanders, K. Nandakumar, and Jacob H. Masliyah. "Hydrodynamic Simulation of Horizontal Slurry Pipeline Flow Using ANSYS-CFX." Industrial & Engineering Chemistry Research 48, no. 17 (September 2, 2009): 8159–71. http://dx.doi.org/10.1021/ie801505z.

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Borovkov, А. I., I. B. Voinov, Y. B. Galerkin, and A. A. Drozdov. "Modeling Results of Gas-Dynamic Characteristics of Low and Medium Flow Rate Model Stages for an Industrial Centrifugal Compressor." Proceedings of Higher Educational Institutions. Маchine Building, no. 9 (714) (September 2019): 77–87. http://dx.doi.org/10.18698/0536-1044-2019-9-77-87.

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The paper presents the results of CFD calculations of two model stages with 2D impellers. The results were compared with the experimental characteristics obtained at the LPI Problem Laboratory. The centrifugal stage of the 2D impeller 0028-056-0373 was calculated for three different Mach numbers, with and without the gaps in the labyrinth seals. Calculations for the sector with one blade were performed using the NUMECA software, those for the full 360-degree model — in the ANSYS CFX software package. CFD calculations in all the cases gave an unacceptably high overestimation of the loading factor compared to the experimental data. It was established that the calculated characteristics of the stage efficiency leant towards high flow rates compared to the measured values. A stage of the 2D impeller 0048-048-029 was calculated for one Mach number without taking into account the gap in the labyrinth seals and for the full 360-degree model. A study of semi-empirical parameters and coefficients included in the SST turbulence model implemented in the ANSYS CFX software was carried out. The calculations showed that their choice for solving this class of problems had little effect on the calculation results, thus it was not possible to influence the loading factor.

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Popov, Gencho, Kliment Klimentov, Boris Kostov, and Reneta Dimitrova. "Determining the minor loss coefficient of cone diffusers." E3S Web of Conferences 207 (2020): 04004. http://dx.doi.org/10.1051/e3sconf/202020704004.

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This work represents results concerning different methods, used to determine the minor loss coefficient of a cone diffuser, installed at the system’s outlet. These results are compared with experimental data and numerical results, obtained after using ANSYS CFX and the data base of Pipe Flow Expert. For determining the minor loss coefficient of a cone diffuser, being installed at the system outlet and having a straight pipe section in front of it, some models in ANSYS CFX are established. These models are validated by using previously published experimental data. An empirical equation, based on the results found, enabling the accomplishment of analytical studies concerning the energy efficiency of fan systems, using an outlet diffuser, has been established.

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Mamaev, A. V., S. M. Dmitriev, R. R. Ryazapov, A. E. Sobornov, and A. V. Kotin. "Numerical study of swirling flow in a steam generating element model with double-sided heating." Journal of Physics: Conference Series 2088, no. 1 (November 1, 2021): 012026. http://dx.doi.org/10.1088/1742-6596/2088/1/012026.

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Abstract The paper is devoted to numerical modelling of the swirling flow in an annular channel with an inner twisted pipe. The computational model is designed. The technique of swirling flow calculation is tested for CFD packages LOGOS and ANSYS CFX. The velocity and pressure calculated fields are obtained. Experimental and calculated velocity profiles over the channel cross section are presented. The loss coefficient values is obtained. Experimental and calculated comparison of results is made.

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Nagornaya, O. Yu, V. A. Gorbunov, A. A. Pavlov, and P. A. Mineev. "Development of combustion-gas turbine model." Vestnik IGEU, no. 3 (June 30, 2022): 5–12. http://dx.doi.org/10.17588/2072-2672.2022.3.005-012.

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The demand for electricity is growing due to industry development in the world. Thus, the issue to obtain energy using installations that use secondary energy resources is relevant. In this regard, it is important to carry out the research on the operation of such installations. There are many ways to study the operation of turbines as one of the types of installations that uses secondary energy resources. For this purpose, such visual environment as ANSYS allows you to get a visual 3D representation of the turbine operation. Thus, an urgent task is to develop a numerical determined turbine model in the ANSYS CFX package and then adapt it based on experimental data. The model based on numerical experiments can be used to find ways to increase the electricity output. The top-pressure recovery turbine GUBT-25 is chosen as the object of the research. During the research the professional analytical ANSYS CFX software has been used to solve thermal-, hydro-, and gas-dynamic problems. Also, such software module as BladeGen is applied to design a solid-state model and TurboGrid is to create a grid. ANSYS CFX software uses the following basic equations for the numerical solution of the gas expansion problem in a turbine: the energy equation, the momentum equation, and the continuity equation. For the first time a numerical determined model of the GUBT-25 turbine has been developed in the ANSYS CFX analytical software. Also, a preliminary verification of the model has been carried out based on the results of the industrial experiment conducted at the OJSC “Severstal” turbine. In addition, to demonstrate the capabilities of the model the article graphically presents such characteristics as distribution of temperature and velocity in the first stage of the turbine. The developed numerical model of the GUBT-25 turbine has series of restrictions that affect the simulation results. The results of comparing the data obtained during the simulation differ from the experimental data. In case the model is more complicated, it will be possible to simulate the real processes of GUBT-25 more accurately.

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Dykas, Sławomir, Mirosław Majkut, Krystian Smołka, Michał Strozik, Tadeusz Chmielniak, and Tomasz Staśko. "Numerical and Experimental Investigation of the Fan with Cycloidal Rotor." Mechanics and Mechanical Engineering 22, no. 2 (August 24, 2020): 447–54. http://dx.doi.org/10.2478/mme-2018-0036.

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AbstractIn this paper, the investigation of the cycloidal rotor fan (CRF) was presented. A CRF with four blades of the NACA0012 profile was used for the analysis. The CFD calculations were carried out by means of Ansys CFX commercial software. The experimental tests were done using velocity field measurement with the LDA technique. Numerical results were compared with experimental measurement in terms of velocity values. The CRF performance characteristic was prepared on the basis of experimental and numerical results.

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Raj, Karuppa, R. Ramsai, J. Mathew, and G. Soniya. "Numerical investigation of fluid flow and heat transfer characteristics on the aerodynamics of ventilated disc brake rotor using CFD." Thermal Science 18, no. 2 (2014): 667–75. http://dx.doi.org/10.2298/tsci111219204r.

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Ventilated brake discs are used in high speed vehicles. The brake disc is an important component in the braking system which is expected to withstand and dissipate the heat generated during the braking event. In the present work, an attempt is made to study the effect of vane-shape on the flow-field and heat transfer characteristics for different configurations of vanes and at different speeds numerically. Three types of rotor configurations circular pillared, modified taper radial and diamond pillar vanes were considered for the numerical analysis. A rotor segment of 20? was considered for the numerical analysis due to its rotational symmetry. The pre processing is carried out with the help of ICEM-CFD and analysis is carried out using ANSYS CFX 12.1. The three dimensional flow through the brake rotor vanes has been simulated by solving the appropriate governing equations viz. conservation of mass, momentum and energy using the commercial CFD tool, ANSYS CFX 12. The predicted results have been validated with the results available in the literature. Circular pillar rotor vanes are found to have more uniform pressure and velocity distribution which results in more uniform temperature drop around the vanes. The effect of number and diameter of vanes in the circular pillared rotor is studied and the geometry is optimized for better mass flow and heat dissipation characteristics.

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Fedorov, S. V., and A. Ya Feskova. "Digital modeling of infiltration water inflow to sewerage systems." Вестник гражданских инженеров 19, no. 3 (2022): 104–9. http://dx.doi.org/10.23968/1999-5571-2022-19-3-104-109.

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Infiltration water generated as a result of storm event coming to water disposal system has an impact on the accuracy of the water balance calculation by the companies. Modeling the infiltration water flow using the package of finite element analysis (Ansys CFX) will help providing more exact estimation of water volume in order to increase authenticity of water balance consolidation. The purpose of the study was to create a model of sewerage network section based on Ansys CFX with due consideration of the arriving infiltration water flow generated as a result of storm events as exemplified by two sections with different soil characteristics, namely, fine sand and coarse sand. As a result, there has been developed a conceptual model of infiltration water inflow coming through soils with different characteristics to the sewerage system.

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Bostan, Viorel, Marin Guțu, and Ion Rabei. "Numerical simulation of transient aerodynamic processes in the vertical axis wind turbine rotor." Journal of Engineering Sciences and Innovation 4, no. 2 (May 30, 2019): 145–54. http://dx.doi.org/10.56958/jesi.2019.4.2.145.

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This paper describes the steps of elaboration of calculation model for dynamic simulation of a small vertical axis wind turbine rotor. The calculation model is based on the finite element analysis ANSYS CFX software. The CFD model is used to determine the performance of the wind turbine rotor for different settings (tip speed ratio, solidity, mesh size etc.). The verification of the proposed model is done by hand calculation of the rotor performance and comparison of the real wind turbines output.

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R. Nallappan et al.,, R. Nallappan et al ,. "CFD Analysis of Flow Over Bluff Bodies with Various Ranges of Injection using ANSYS CFX." International Journal of Mechanical and Production Engineering Research and Development 9, no. 3 (2019): 619–24. http://dx.doi.org/10.24247/ijmperdjun201967.

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