Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1603 for “"cfd"”.
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Nuclear Subchannel Investigations Using CFD
Made available in DSpace on 2017-07-06T18:56:04Z (GMT). No. of bitstreams: 3 Rock_Daniel_T_MS.pdf: 62552009 bytes, checksum: 88a7dd5d3e4e5c67f3a3524e6c5b6f16 (MD5) Rock_Daniel_T_MS_ABS.pdf: 1681414 bytes, checksum: 0c61614b1bf9c4f31fa419ee777984c1 (MD5) license.txt: 4813 bytes, checksum: …
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Parametrická studie výměníku tepla pomocí CFD
… i mezitrubkový prostor. Dále byl vytvořen CFD model, pomocí kterého byla vykonána parametrická studie, jež se zabývala vlivem změn geometrie přepážek na tepelný výkon výměníku a tlakové ztráty v mezitrubkovém prostoru.
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Multiphase CFD modelling of stirred tanks
… methods using computational fluid dynamics (CFD). Among the various numerical works presented, emphasis was laid mainly on single phase systems. However, due to the various processes involving gas-liquid systems, the need for multiphase modelling of stirred tanks became increasingly …
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Visualization of three dimensional CFD results
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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CFD Simulation of Chemical Looping Combustion System
… technology. Use of computational fluid dynamics (CFD) has the potential to boost the development and implementation of commercial-scale CLC units. This dissertation focuses on designing a novel semi-batch CLC unit using fluidized-bed reactors and modeling the hydrodynamics of fluidized bed …
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CFD modelling of flow distortion using OpenFOAM
… thesis presents a computational fluid dynamic (CFD) study of flow related to wind engineering. The open source CFD code OpenFOAM was applied to three cases (i) flow over an oil platform, (ii) flow over a complex terrain and (iii) flow over a met mast. In order to verify the results, experimental …
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Intelligent control system for CFD modelling software
… of emulating the human ability to control CFD simulations and provide similar benefits in terms of performance, overall reliability and result accuracy. We initially consider the rule-based approach proposed by other researchers. It is argued that heuristic search is better suited to model …
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Využití programu SolidWorks k přípravě modelů CFD
… využití programu SolidWorks k přípravě modelů CFD (výpočet proudění metodou konečných objemů). Práce v první části popisuje způsob přípravy modelu kapaliny protékající oběžným kolem Francisovy turbíny a uvádí obzvláště užitečné funkce a vhodné postupy. V druhé části je rozebrány výhody přípravy …
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Application of CFD to hydrocyclone flow prediction
… techniques such as Computational Fluid Dynamics (CFD). This dissertation presents the outcome of an investigation into the flow characteristics of a hydrocyclone. Assessment of its hydrodynamic behaviour was conducted via interpretation of numerically predicted velocity and pressure field profiles …
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Ship hull resistance calculations using CFD methods
… required by Computational Fluid Dynamics (CFD) codes restricted their use in ship design space exploration. Increases in computational power available to designers, in addition to more efficient codes, have made CFD a valuable tool for early stage ship design and trade studies. In this work …
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Multiscale CFD simulations of entrained flow gasification
… were designed before it was practical to apply CFD models. Moreover, gasification CFD models developed over the years may have lacked accuracy or have not been tested over a wide range of operating conditions, gasifier geometries and feedstock compositions. One reason behind this shortcoming is …
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Uncertainty assessment for CFD using error transport equation
While Computational Fluid Dynamics (CFD) is making extensive use of the power of computational technology, it is also facing a serious problem arising from the so-called numerical uncertainty. The overall uncertainty (or the global error) involved in CFD results can be due to different sources …
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Assessment of Varying Model Representations in CFD Simulations
… representation of computational fluid dynamics (CFD) simulations in two case studies. Product and process realization in engineering design requires substantial resources (time and money) in order to test novel designs for effectiveness. In recent decades, engineering has been relying more …
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Passive micromixers for DNA analysis using CFD modelling
… is conducted using computational fluid dynamics (CFD) approach using ANSYS Fluent and CFX Software for different geometries designed. Different geometric configuration were proposed and used: bottleneck near the inlet and along the zig zag and curved shaped rectangular zig zag geometry. Mixing …
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CFD studies of complex fluid flows in pipes
… studies to these multiphase systems. Validated CFD simulations were used to study the effects of rotational and transversal mechanical vibrations on the pipe flow of viscous non-Newtonian fluids of the power-law, Bingham plastic, and Herschel-Bulkley types. Vibration frequencies in the sonic …
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Performance analysis and optimization of a CFD application
… finite difference computational fluid dynamics (CFD) application (PlasComCM). Performance bottlenecks were identified using performance tools and hardware counters. The performance analysis of PlasComCM showed that the quantity of memory accesses and the lack of vectorization inhibited optimal …
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Improving turbomachinery loss prediction using high fidelity CFD
High fidelity simulations of three compressor cascades and a fundamental trailing edge flow are used to interrogate, and improve upon, the errors present in conventional RANS simulations. Using the optimum turbulence viscosity, calculated from the high fidelity simulations, it is found that error …
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A CFD framework for aeroelastic gust load calculations
A Computational Fluid Dynamics (CFD) framework for the simulation of the aeroelastic response of aircraft flying under gust loading was developed. The multiphysics, Finite Volume, VertexCentered code Elementaltextsuperscript{textregistered} was employed and calculations were performed for the …
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Visualization for high-order discontinuous Galerkin CFD results
This thesis demonstrates a technique that reduces the perceived error introduced in the visualization of higher-order DG solutions with traditional tools. Most visualization techniques work by using the solution at the mesh vertices and linearly interpolating to color the interior of the element. …
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