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Dissertations / Theses on the topic 'Computational fluids dynamics (CFD)'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Dodds, David Scott. "Computational fluid dynamics (CFD) modelling of dilute particulate flows." Swinburne Research Bank, 2008. http://hdl.handle.net/1959.3/44947.

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Thesis (PhD) - Swinburne University of Technology, Faculty of Engineering and Industrial Sciences, 2008.<br>A thesis submitted for the degree of Doctor of Philosophy, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, 2008. Typescript. Bibliography: p. 129-142. Includes bibliographical references (p. 259-274)

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2

Charmchi, Isar. "Computational Fluid Dynamics (CFD) Modeling of a Continuous Crystallizer." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Crystallization is one of the most important separation and purification processes in chemical and especially in pharmaceutical industries. Currently most crystallization processes in the industry are based on batch crystallization; however, due to the variation of product quality per batch, efforts are made to move to continuous processes instead. In this respect, micro and meso scale reactors represents a promising technology due to enhanced heat and mass transfer rates, which, translated to particle generation, provide control of size, morphology, and composition. In this study, a meso-

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3

Kaggerud, Torbjørn Herder. "Modeling an EDC Cracker using Computational Fluid Dynamics (CFD)." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9536.

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<p>The process used by the Norwegian company Hydro for making Vinyl Chloride Monomer (VCM) from natural gas and sodium chloride has been studied. A three dimensional CFD model representing the firebox of the EDC cracker has been developed using the commercial CFD tool Fluent. Heat to the cracker is delivered by means of combustion of a fuel gas consisting of methane and hydrogen. In the developed CFD model used in this work, the combustion reaction itself is omitted, and heat is delivered by hot flue gas. With the combustion reaction left out, the only means of tuning the CFD model is through

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4

Al-Far, Salam H. "Indirect fired oven simulation using computational fluid dynamics (CFD)." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618655.

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5

Kleemann, Andreas Peter. "CFD simulation of advanced diesel engines." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/62159.

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This study uses CFD methodology to simulate an advanced Diesel engine operated at higher than conventional peak cylinder pressures. The existing mathematical models for Diesel combustion, pollutant formation and wall heat transfer are improved and validated for this operating range. The fluid flow is described via the gas-phase Favre-averaged transport equations, governing the conservation of mass, chemical species, momentum and energy, based on the Eulerian continuum framework. These equations are closed by means of the k — e turbulence model. The liquid phase uses the Lagrangian approach, in

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6

Chambers, Steven B. "Investigation of combustive flows and dynamic meshing in computational fluid dynamics." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/1324.

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Computational Fluid Dynamics (CFD) is a ﬁeld that is constantly advancing. Its advances in terms of capabilities are a result of new theories, faster computers, and new numerical methods. In this thesis, advances in the computational ﬂuid dynamic modeling of moving bodies and combustive ﬂows are investigated. Thus, the basic theory behind CFD is being extended to solve a new class of problems that are generally more complex. The ﬁrst chapter that investigates some of the results, chapter IV, discusses a technique developed to model unsteady aerodynamics with moving boundaries such as ﬂapping w

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7

Demir, H. Ozgur. "Computational Fluid Dynamics Analysis Of Store Separation." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605294/index.pdf.

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In this thesis, store separation from two different configurations are solved using computational methods. Two different commercially available CFD codes<br>CFD-FASTRAN, an implicit Euler solver, and an unsteady panel method solver USAERO, coupled with integral boundary layer solution procedure are used for the present computations. The computational trajectory results are validated against the available experimental data of a generic wing-pylon-store configuration at Mach 0.95. Major trends of the separation are captured. Same configuration is used for the comparison of unsteady panel method

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8

Murad, Nurul Muiz. "Computational fluid dynamics (CFD) of vehicle aerodynamics and associated acoustics." Swinburne Research Bank, 2009. http://hdl.handle.net/1959.3/47824.

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Thesis (PhD) - Swinburne University of Technology, School of Engineering and Science, 2009.<br>A thesis submitted in accordance with the regulations for the degree of Doctor of Philosophy, School of Engineering and Science, Swinburne University of Technology, 2009. Typescript. Includes bibliographical references (p. 315-330)

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9

Chou, Ching Ju. "The Application of Computational Fluid Dynamics to Comfort Modelling." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16686.

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This thesis studies thermal comfort in heating, ventilation and air-conditioning (HVAC) scenarios with computational fluid dynamics (CFD) models at domain and occupant levels. Domain level comfort modelling, where the details of the occupant are not modelled, is investigated utilising Fanger’s Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) comfort models. Occupant level comfort modelling, where the occupant geometry and skin temperature are required, is explored using two different models. The first model termed the thermal manikin model couples the University of Cali

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10

Shaw, Michael James. "An assessment of CFD for transonic fan stability studies." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709038.

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11

Lai, Ho-yin Albert. "Artificial intelligence based thermal comfort control with CFD modelling /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21929555.

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12

Wang, Le. "Study of gas turbine ingress using computational fluid dynamics." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604894.

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The ingestion of hot mainstream gas into the wheel-space between the rotor and staler discs is one of the most important internal cooling problems for gas turbine designers. To solve this problem, engineers design a rim seal at the periphery of wheel-space and direct a sealing flow from the internal cooling system to prevent ingress. The main aim of this thesis is to build a simple computational model to predict the scaling effectiveness of externally-induced ingress for engine designers. The axisymmetric model represents a gas turbine wheel-space and provides useful information related to the

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13

Chiu, Ya-Tien. "Computational Fluid Dynamics Simulations of Hydraulic Energy Absorber." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/34775.

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Hydraulic energy absorbers may be described as high-loss centrifugal turbomachines arranged to operate as stalled torque converters. The device absorbs the kinetic energy of a vehicle in motion and dissipates the energy into water. A steady, single-phase, Computational Fluid Dynamics (CFD) simulation has been performed to investigate the flow field in a hydraulic energy absorber. It was determined that to better predict the performance of the energy absorber, more sophisticated modeling approaches may be needed. In this research, a steady, two-phase calculation with basic turbulence modeling

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14

Postnikov, Andrey. "Wake oscillator and CFD in modelling of VIVs." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=229013.

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With many decades of research devoted to the intriguing nature of vortex-induced vibrations, the offshore industry is constantly looking for new effective solutions in predicting VIV of slender marine structures such as riser pipes. These structures are very sensitive to excitations induced by vortex shedding, which results in vibrations that in certain combinations of waves and current develop into a structural resonance phenomenon known as lock-in. This kind of vibrations can be destructive to some structures and lead to collapse. Many of VIV aspects are far from being understood and advance

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15

Chang, Bong Jun. "Application of CFD to marine propellers and propeller-hull interactions." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286067.

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16

Johnson, Benjamin Michael Carver. "Computational Fluid Dynamics (CFD) modelling of renewable energy turbine wake interactions." Thesis, University of Central Lancashire, 2015. http://clok.uclan.ac.uk/12120/.

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This thesis presents Computational Fluid Dynamics (CFD) simulations of renewable turbines akin to those used for wind, hydro, and tidal applications. The models developed took the form of actuator discs with the solution of incompressible Reynolds-Averaged Navier-Stokes equations with the k-ω SST turbulence models. Simulations were initially conducted of a single turbine in water and air and then two axially aligned turbines to study the flow field interactions. These models were compared with previous theoretical, experimental and numerical data evident in the literature. Generally, good agre

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17

Shelley, Jonathan Knighton. "Incorporating Computational Fluid Dynamics Into The Preliminary Design Cycle." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd979.pdf.

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18

Wong, Lak Kin. "Computational Fluid Dynamics Analysis on the Liquid Piston Gas Compression." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-theses/1104.

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"Liquid piston gas compression utilizes a liquid to directly compress gas. The benefit of this approach is that liquid can conform to irregular compression chamber volume. The compression chamber is divided into many small little bores in order to increases the surface area to volume ratio. The heat transfer rate increases with increasing surface area to volume ratio. However, as the bore diameter becomes smaller, the viscous force increases. In order to maximize the heat transfer rate and to minimize the viscous force, computational fluid dynamics is used. ANSYS Fluent is used to simulate

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19

Mora, Pérez Miguel. "Computational fluid dynamics (CFD) applied to buildings sustainable design: natural ventilation. Case study." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/86208.

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Through the last decades, building designers should deal with reliable design strategies to take advantage of natural resources in order to increase energy efficiency in buildings, as well as to promote sustainable development and add value to the society. This thesis proposes a reliable building design strategy to improve buildings energy efficiency by means of natural ventilation (NV) use. The strategy consists in evaluating the most suitable architectural solution in a particular case study taking into account environmental conditions and building surroundings in order to maximize NV use si

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20

Hari, Sridhar. "Computational Fluid Dynamics (CFD) simulations of dilute fluid-particle flows in aerosol concentrators." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/1619.

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In this study, commercially available Computational Fluid Dynamics (CFD) software, CFX-4.4 has been used for the simulations of aerosol transport through various aerosol-sampling devices. Aerosol transport was modeled as a classical dilute and dispersed two-phase flow problem. Eulerian-Lagrangian framework was adopted wherein the fluid was treated as the continuous phase and aerosol as the dispersed phase, with a one-way coupling between the phases. Initially, performance of the particle transport algorithm implemented in the code was validated against available experimental and numerical data

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21

Coe, Ryan Geoffrey. "Improved Underwater Vehicle Control and Maneuvering Analysis with Computational Fluid Dynamics Simulations." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23777.

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The quasi-steady state-space models generally used to simulate the dynamics of underwater vehicles perform well in most steady flow scenarios, and are therefore acceptable for modeling today\'s fleet of endurance-focused autonomous underwater vehicles (AUVs). However, with their usage of numerous assumptions and simplifications, these models are not well suited to certain unsteady flow situations and for use in the development of AUVs capable of performing more extreme maneuvers. In the interest of better serving efforts to design a new generation of more maneuverable AUVs, a tool for simulati

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22

Limache, Alejandro Cesar. "Aerodynamic Modeling Using Computational Fluid Dynamics and Sensitivity Equations." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27033.

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A mathematical model for the determination of the aerodynamic forces acting on an aircraft is presented. The mathematical model is based on the generalization of the idea of aerodynamically steady motions. One important use of these results is the determination of steady (time-invariant) aerodynamic forces and moments. Such aerodynamic forces can be determined using computer simulation by determining numerically the associated steady flows around the aircraft when it is moving along such generalized steady trajectories. The method required the extension of standard (inertial) CFD formulations

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23

Del, Toro Adam. "Computational Fluid Dynamics Analysis of Butterfly Valve Performance Factors." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1456.

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Butterfly valves are commonly used in industrial applications to control the internal flow of both compressible and incompressible fluids. A butterfly valve typically consists of a metal disc formed around a central shaft, which acts as its axis of rotation. As the valve's opening angle is increased from 0 degrees (fully closed) to 90 degrees (fully open), fluid is able to more readily flow past the valve. Characterizing a valve's performance factors, such as pressure drop, hydrodynamic torque, flow coefficient, loss coefficient, and torque coefficient, is necessary for fluid system designers

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24

Linton, Daniel. "A Hybrid Computational Fluid Dynamics Method for Unsteady Simulation of the Ship-Helicopter Dynamic Interface." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/22894.

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Helicopters operating from ships are exposed to turbulent airwakes which can determine ship-helicopter operating limits. During concurrent operations rotor-rotor interactions add to the complexity of the aerodynamics. Computational fluid dynamics solvers are able to predict these aerodynamics from first principles with the aid of turbulence-resolving approaches such as detached eddy simulation. Although it is possible to create body-fitted grids to resolve the rotor blades and move them, the fuselage, and the ship relative to one another, this is a computationally expensive and labour intensiv

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25

Kumar, Suman. "Computational fluid dynamics (CFD) and physical modelling of a metal refining process." Thesis, University of Greenwich, 2003. http://gala.gre.ac.uk/6213/.

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Impeller-stirred mixing is one of the most important processes employed throughout the chemical, metallurgical and allied industries. The research reported in this thesis is focused on impeller stirred mixing associated with the refining of lead bullion. The aim of this process is to sequentially remove contained impurities such as copper, antimony, silver and bismuth. This occurs in hemispherical vessels, called kettles, where reagents are initially added to the lead bath to form surface dross that contains both the required impurity and a large amount of lead oxide. This dross is then contin

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26

Reddy, D. N. "Prediction of slam loads on ships using computational fluid dynamics (CFD) techniques." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248950.

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27

Roberge, Jennifer Anne. "Use of Computational Fluid Dynamics (CFD) to Model Flow at Pump Intakes." Digital WPI, 1999. https://digitalcommons.wpi.edu/etd-theses/1046.

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"This thesis presents a series of physical experiments and numerical simulations intended to determine whether the use of commercially available computational fluid dynamics (CFD) software may provide a viable alternative to the use of physical models for predicting the occurrence of vortices and swirl in pump intakes. The physical experiments were set up at Alden Research Laboratories, Inc. (ARL) of Holden, Massachusetts, using a simple pump intake model donated by ARL for use in this study. Swirl and velocity measurements and dye injections were used to characterize the flow in the physica

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28

Gilmore, Jordan David. "Computational Fluid Dynamics Analysis of Jet Engine Test Facilities." Thesis, University of Canterbury. Mechanical Engineering, 2012. http://hdl.handle.net/10092/7238.

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This thesis investigates the application of CFD techniques to the aerodynamic analysis of a U-shaped JETC. Investigations were carried out to determine the flow patterns present at a number of locations within the structure of a full U-shaped JETC. The CFD solutions produced in these investigations used recommendations from the literature in the set-up of the CFD solver, and provided the computational component towards problem-specific validation of the CFD techniques used. A structured series of CFD-aided investigation and design processes were then performed. These processes were based aro

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29

Wittes, Thobeka. "Determination of the gas-flow patterns inside the hot-wire chemical vapor deposition system, using computational fluids dynamics software (fluent)." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7638_1310988940.

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<p>Computational Fluid Dynamics is the analysis of a system involving fluid flow, heat transfer and associated phenomena such as chemical reactions by means of a computer-based simulation. The simulations in this study are performed using (CFD) software package FLUENT. The mixture of two gases (Silane gas (SiH4) and Hydrogen gas (H2)) are delivered into the hot-wire chemical vapor deposition system (HWCVD) with the two deposited substrates (glass and Silicon). This process is performed by the solar cells group of the Physics department at the University of the Western Cape. In this thesis, the

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Sharpe, Jacob Andrew. "3D CFD Investigation of Low Pressure Turbine Aerodynamics." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1495872867696744.

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Ivchenko, Alexander. "Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356.

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In this thesis work the feasibility of using open source OpenFOAM software as a solver part for Computation Fluid Dynamics in Volvo Technology is studied. Since the structure of the case in OpenFOAM is rather complex, one of the main purposes of this thesis work was also to make the process of using OpenFOAM as user-friendly as possible. The general conclusion that can be drawn from this work is that a very streamlined workflow can be, and has been, designed and created.

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Villamizar, Urbano Montañez 1983. "Estudo da fluidodinâmica em um Erlenmeyer com uso de CFD." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266101.

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Orientador: José Roberto Nunhez<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-25T09:46:44Z (GMT). No. of bitstreams: 1 Villamizar_UrbanoMontanez_M.pdf: 2761421 bytes, checksum: b36bf4d1123da6ad78402c7d206517a3 (MD5) Previous issue date: 2013<br>Resumo: Os Erlenmeyers agitados têm sido utilizados como uma ferramenta em pesquisa na área biotecnológica e laboratórios industriais, especialmente em estágios iniciais, onde graças a sua praticidade, muitos experimentos podem ser realizados simultaneamente com um

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Hu, Shishan. "Application of computational fluid dynamics to aerosol sampling and concentration." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1345.

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34

Rogers, Charles. "Computational Fluid Dynamics Analysis of an Ideal Anguilliform Swimming Motion." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1940.

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There is an ongoing interest in analyzing the flow characteristics of swimming fish. Biology has resulted in some very efficient motions and formulating these motions is of interest to engineers. One such theory was written by Dr. William Vorus and Dr. Brandon Taravella involving ideal efficiency. It is therefore interesting to test the calculations to see if it is possible to design a motion that can create thrust without necessarily creating vorticity. The computational fluid dynamics software of ANSYS Fluent was used to calculate the resulting flow field of the eel motion to compare with th

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Zappone, Marco. "Computational Fluodynamics Modeling (CFD) of horizontal propane jet fires." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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With regard to pipeline transportation of hazardous material, the occurrence of a jet fire is one of the most common accidents in case of loss of containment. In light of this consideration, an appropriate estimation of the accident scenario is necessary to determine the magnitude of the risk and the required measures to avoid or mitigate the consequences. Computational Fluid Dynamics (CFD) represents a valid tool to be used in this framework, because of its capability to describe the evolution of the accident, considering the obstacles and the site-specific factors. In this work, the capabili

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El-Achwah, Ahmad Mr. "OPTIMIZING NASAL CANNULAS FOR INFANTS USING COMPUTATIONAL FLUID DYNAMICS." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/6096.

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Aerosolized medications can potentially be delivered to the lungs of infants through a nasal cannula interface. However, nose-to-lung delivery technologies currently allow for ~1% of the loaded dose to reach an infant’s lungs. Conventional dry powder inhalers (DPI) are superior to other types of inhalers in many ways. However, passive DPIs that operate based on user inhalation and require large volumes of airflow are not applicable to infants. To overcome this challenge, positive pressure DPIs have been developed that enable aerosol delivery to infants. Unless an adequate nasal interface is us

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黎浩然 and Ho-yin Albert Lai. "Artificial intelligence based thermal comfort control with CFD modelling." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B3122278X.

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Lima, Nicolao Cerqueira 1985. "Simulação de escoamentos eletrohidrodinâmicos de fluidos newtonianos e viscoelásticos." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263465.

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Orientador: Marcos Akira d'Ávila<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-22T01:11:51Z (GMT). No. of bitstreams: 1 Lima_NicolaoCerqueira_M.pdf: 2608433 bytes, checksum: 1f09fc99d86a78b7861be6972463c29c (MD5) Previous issue date: 2013<br>Resumo: A eletrohidrodinâmica trata basicamente dos efeitos de um campo elétrico em meios contínuos. Um fluido sob o efeito de um campo elétrico tende a se deformar devido a uma força elétrica que age sobre ele. Essa força elétrica é consequência de alguns fatores qu

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Sagerman, Denton Gregory. "Hypersonic Experimental Aero-thermal Capability Study Through Multilevel Fidelity Computational Fluid Dynamics." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1499433256220438.

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Marineau, Eric Christian. "Computational and Experimental Investigation of Supersonic Convection over a Laser Heated Target." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/27919.

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This research concerns the development and validation of simulation of the beam-target interaction to determine the target temperature distribution as a function of time for a given target geometry, surface radiation intensity and free stream flow condition. The effect of a turbulent supersonic flow was investigated both numerically and experimentally. Experiments were in the Virginia Tech supersonic wind tunnel with a Mach 4 nozzle, ambient total temperature, total pressure of 160 psi and Reynolds number of 5 × 10⁷/<i>m</i> . The target consisted of a 6.35 mm stainless steel plate painted f

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Tanamal, Tan Kong Hong Ryan. "Modelling of fluid flow in multiple axial groove water lubricated bearings using computational fluid dynamics." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16531/1/Tan_Tanamal_Thesis.pdf.

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Extensive research has been conducted in the area of journal bearings over many years for various operating conditions and geometry, effects of different types of lubricants (oil and water), different numbers (zero, one and three) and positions of grooves and the flow of lubricant between the shaft and bearing. One area of research has been developing methods to minimize the experimental time and cost of predicting the performance of journal bearings operating over a wide variety of conditions. This has led to numerical methods being developed and utilised for this purpose. Numerical methods a

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Tanamal, Tan Kong Hong Ryan. "Modelling of fluid flow in multiple axial groove water lubricated bearings using computational fluid dynamics." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16531/.

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Extensive research has been conducted in the area of journal bearings over many years for various operating conditions and geometry, effects of different types of lubricants (oil and water), different numbers (zero, one and three) and positions of grooves and the flow of lubricant between the shaft and bearing. One area of research has been developing methods to minimize the experimental time and cost of predicting the performance of journal bearings operating over a wide variety of conditions. This has led to numerical methods being developed and utilised for this purpose. Numerical methods a

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AD, Thirumuruga, and Paramita Das. "CFD Modelling of a flat plate." Thesis, 2010. http://ethesis.nitrkl.ac.in/1901/1/thiru_proj.pdf.

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Performance of an aircraft wing depends on the smoothness of the air flow over it. Any accumulation of frost, snow or ice on the wings or other horizontal surfaces will substantially alter the lifting characteristics of the airfoil and also changes the values of aerodynamic forces exerted on the airfoil. So any small change in flow parameters could affect its performance in a larger scale. This can sometimes be disastrous too. The wings of the airplane are also susceptible to corrosion also due to the excess humidity level. When it comes to large airfoils like aircraft wings, these parameters

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Ahlawat, Paramvir. "CFD Modeling of Hydrodynamics of Fluidized Bed." Thesis, 2009. http://ethesis.nitrkl.ac.in/261/1/PROJECT1.pdf.

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The objective of this project is to simulate a gas-solid fluidized by applying CFD techniques in order to investigate hydrodynamics and heat transfer phenomena. Reactor model predictions will be compared with the corresponding experimental data reported in the literature to validate the model . To simulate a gas-solid fluidized bed we need to use the multiphase flow approach . First we have to write the equations for the different flow regimes and then different CFD techniques are applied for discretization of those equations. After that a code is written for calculating the values of volume

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Priyadarshini, Varsa. "Study of Drag Coefficient Using CFD Tools." Thesis, 2012. http://ethesis.nitrkl.ac.in/3476/1/B._Tech_Thesis_108CH045.pdf.

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Flow over cylinder is frequently encountered in practice. The objective of this project is modelling and simulation of the flow over a cylinder by using CFD techniques in order to study the values of drag coefficient at different Reynolds number ranging from 1 to 100 at a given Length to Diameter ratio (L/D). Different length to diameter ratio (L/D) of cylinder is considered, ranging from 0.005 to 1 is taken. Study of the variation of drag coefficient at different L/D ratios of the cylinder at a constant Reynolds has been done graphically. Comparison of the values of drag coefficient at L/D eq

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Bhoi, Stutee. "Study of microchannel reactor using cfd analysis." Thesis, 2012. http://ethesis.nitrkl.ac.in/3891/1/THESIS-_STUTEE_BHOI.pdf.

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Microchannel reactors involve reaction chamber whose dimensions are typically in the range of micrometers (µm) with volumetric capacity in the range of micro liters (µL). The high surface to volume ratio, efficient heat and mass transfer characteristics and vastly improved ﬂuid mixing allow precision control of reaction with improved conversions,selectivities and yields of desired products. Reverse-flow action is used to utilize the thermal energy inside a reactor.Energy from the reaction and exit gasses are captured and utilized within the reactor by the reversing flow action.The captured t

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Patra, Chinmayee. "Cfd simulations of fluidized bed Biomass gasification." Thesis, 2014. http://ethesis.nitrkl.ac.in/6563/1/M.Tech(R)_Thesis_(611ch304).pdf.

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CFD simulation of fluidized bed biomass gasification process has been carried out in the present work. The gas-solid interaction, thermal-flow behavior and gasification process inside a fluidized-bed biomass gasifier are studied using the commercial CFD solver ANSYS/FLUENT13.0. Velocity profile, bed expansion, solid movement, temperature profile, species mass fractions have been focused in the present work. Three phases are used to model the reactor (sand, solid phase for the fuel, and gas phase). All phases are described using an Eulerian approach to model the exchange of mass, energy and mom

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Meher, Bijaya Kumar. "CFD Analysis of a Pulse Tube Cryocooler." Thesis, 2015. http://ethesis.nitrkl.ac.in/7568/1/181.pdf.

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Pulse tube refrigerators are latest technical instrument in the field of refrigeration engineering. So they are preferred over other types of cryocooler like Stirling and Gifford-McMahon coolers because of no moving parts in the cooler making the cooler widely useful for various purposes. Other ordinary refrigerators use vapor compression cycle but pulse tube utilizes oscillatory expansion and compression of gas present inside it. Pulse tube cryocooler has long life compared to other refrigerators, high reliability and low vibration because of no solid piston moving. These coolers have vast ap

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Gopaliya, Manoj Kumar. "CFD modelling of slurry flows through horizontal pipelines." Thesis, 2018. http://localhost:8080/iit/handle/2074/7628.

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Bhola, Deepak Ranjan. "CFD analysis of flow through venturi of carburetor." Thesis, 2011. http://ethesis.nitrkl.ac.in/2296/1/final_report.pdf.

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Modern passenger vehicles with gasoline engines are provided with different compensating devices for fuel air mixture supply. Even then there is a high fuel consumption because of many factors. One of the important factors that affect the fuel consumption is that design of carburetor. The venturi of the carburetor is important that provides a necessary pressure drop in the carburetor device. Since different SI engine alternative fuels such as LPG, CNG are used in the present day vehicles to reduce the pollution and fuel consumption. Still for a better economy and uniform fuel air supply there

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