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 1299 for “"Computational Fluid Dynamics"”.
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Unsteady Viscous Cavity Flow Using Computational Fluid Dynamics
<p>The problem of unsteady viscous incompressible flow in a two-dimensional cavity is treated using the unsteady incompressible Navier-Stokes equations with various initial and boundary conditions. First the case of a square cavity with one inlet and one outlet is treated in steady and unsteady …
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Computational fluid dynamics modelling of displacement natural ventilation.
… forces. Two benchmarks have been developed using computational fluid dynamics (CFD) in order to evaluate the accuracy with which CFD is able to model natural displacement ventilation flow. The first benchmark considers the natural ventilation of a single ventilated space with high and low level …
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Computational Fluid Dynamics Modeling of Compact Steam Generators
… This thesis explores the use of Multiphase Computational Fluid Dynamics (M-CFD) to simulate two-phase flow boiling in CSGs based on Printed Circuit Heat Exchanger (PCHE) technology. Using the commercial CFD code STAR-CCM+, two modeling approaches—the Volume of Fluid (VOF) model and the …
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Computational fluid dynamics for high performance structural facilities
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Stress distributions around hydrofoils using computational fluid dynamics
This research describes the reciprocal influence between two foils, vertically and horizontally oriented, on each other for different gaps between them. Those cases are the focus part of a bigger process of lowering significantly the drag of a ship when hydrofoils are attached to its hull. The …
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Computational Fluid Dynamics Simulations of Hydraulic Energy Absorber
… 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 …
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Computational fluid dynamics of water vapor/ Zeolite 13X adsorption
This work describes the development of a Finite Element Model (FEM) for use in determining adsorption system performance. The considered interactions are between Zeolite 13X and water vapor for the purposes of engineering adsorbent characteristics and harvester device characteristics. Four …
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Computational fluid dynamics modelling of pipeline on-bottom stability.
… soil resistance, embedment and pipe-soil-fluid interaction. In this thesis Computational Fluid Dynamics (CFD) modelling is used to investigate and establish the interrelationship between fluid (hydrodynamics), pipe (subsea pipeline), and soil (seabed). The effect of soil types, soil …
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Unstructured staggered mesh discretisation methods for computational fluid dynamics
… of engineering science that require solution of fluid flow problems. Some of these examples are aerodynamics of aircraft and vehicles, hydrodynamics of ships, electrical and electronic engineering and many others. Some of these flows may involve complex geometrical shapes which are usually …
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Fast prediction of transonic aeroelasticity using computational fluid dynamics
The exploitation of computational fluid dynamics for non linear aeroelastic simulations is mainly based on time domain simulations of the Euler and Navier-Stokes equations coupled with structural models. Current industrial practice relies heavily on linear methods which can lead to conservative …
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High Order Finite Elements for Lagrangian Computational Fluid Dynamics
… thermodynamic variables. An accompanying hydrodynamics code written in Matlab is presented as a test-bed to experiment with various basis function choices. A wide range of basis function pairs are postulated and a few choices are developed further, including the bi-quadratic Q2-Q1d and Q2-Q2d …
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Incorporating Computational Fluid Dynamics Into The Preliminary Design Cycle
… with in the preliminary design of a product is Computational Fluid Dynamics (CFD). Some of the challenges presented by CFD are the time it takes to create a CAD model, generate a valid grid for analysis, obtain a solution, post-process results, and review the result. The objective of this thesis …
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Sharp interface schemes for multi-material computational fluid dynamics
… for tracking the material interface and evolving fluid states. For the task of tracking the location of sharp material interfaces, we focus on volume tracking methods due to their ability to conserve mass in highly deformational flows. Three original contributions are presented in this area. …
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Aerodynamic Modeling Using Computational Fluid Dynamics and Sensitivity Equations
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) …
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Uncertainty Analysis of Computational Fluid Dynamics Via Polynomial Chaos
The main limitations in performing uncertainty analysis of CFD models using conventional methods are associated with cost and effort. For these reasons, there is a need for the development and implementation of efficient stochastic CFD tools for performing uncertainty analysis. One of the main …
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A Computational Fluid Dynamics Model to Simulate Wood Combustion
Residential wood stoves and wood heaters are being used by nearly 3 billion people worldwide. In the United States, residential wood heaters are used by only 9 % of the households. However, according to the US EPA, they contribute to around 7 % of the cumulative PM2.5 emissions. Furthermore, …
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