Browsing Theses by Subject "CFD"
Now showing items 1-19 of 19
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A CFD Investigation of Balcony Spill Plumes
(University of Waterloo, 2006-12-05)A series of numerical modeling studies were conducted to characterize the mass flow rates in balcony spill plumes (BSP), a type of buoyant fire plume occurring in atria. The variation of BSP mass flow rate as a function ... -
A Comparative Study of the SIMPLE and Fractional Step Time Integration Methods for Transient Incompressible Flows
(University of Waterloo, 2008-12-23)Time integration methods are necessary for the solution of transient flow problems. In recent years, interest in transient flow problems has increased, leading to a need for better understanding of the costs and benefits ... -
An Efficient Computational Method for Thermal Radiation in Participating Media
(University of Waterloo, 2007-07-26)Thermal radiation is of significant importance in a broad range of engineering applications including high-temperature and large-scale systems. Although the governing equations of thermal radiation have been known for ... -
Flow Separation on the β-plane
(University of Waterloo, 2009-05-15)In non-rotating fluids, boundary-layer separation occurs when the nearly inviscid flow just outside a viscous boundary-layer experiences an appreciable deceleration due to a region of adverse pressure gradient. The fluid ... -
Integration of Transpiration Cooling and Shock Thrust Vectoring
(University of Waterloo, 2022-06-16)Transpiration cooling is used for active thermal protection whereas shock thrust vectoring is an attitude control approach. Both concepts rely on the injection, at the wall, of a secondary fluid into a high-speed and ... -
Investigation of Blast Load Characteristics On Lung Injury
(University of Waterloo, 2010-03-31)In many parts of the world, civilians and peacekeepers are exposed to potentially serious injury from blasts and explosions. Providing insight into the trauma thresholds for blast injury is necessary for the development ... -
Investigation of Conditional Source-Term Estimation Approach for Turbulent Partially Premixed Combustion Modelling
(University of Waterloo, 2015-07-29)Conditional Source-term Estimation (CSE) is a closure technique for modelling turbulent combustion phenomena. CSE uses the Conditional Moment Closure (CMC) hypothesis for closing chemical source terms: conditionally averaged ... -
Investigation of Conditional Source-term Estimation Approach to Modelling MILD Combustion
(University of Waterloo, 2016-07-27)Conditional Source-term Estimation (CSE) is a turbulent combustion model which uses conditional averages to provide closure for the mean chemical source term and is based on the same ideas as the Conditional Moment Closure ... -
Investigation of Differential Diffusion Effects in Turbulent Hydrogen Jet Flame using Conditional Moment Closure Method
(University of Waterloo, 2014-08-26)The effects of differential diffusion in the numerical modelling of a turbulent non-premixed hydrogen-air jet flame using a Conditional Moment Closure (CMC) method are investigated. The CMC calculations, which are coupled ... -
Investigation of Mixing Models and Finite Volume Conditional Moment Closure Applied to Autoignition of Hydrogen Jets
(University of Waterloo, 2012-03-09)In the present work, the processes of steady combustion and autoignition of hydrogen are investigated using the Conditional Moment Closure (CMC) model with a Reynolds Averaged Navier-Stokes (RANS) Computational Fluid ... -
Investigation of Turbulent Spray Flames Using the Conditional Source-term Estimation (CSE) Approach
(University of Waterloo, 2022-05-16)Conditional Source-term Estimation (CSE) is a turbulent combustion model for gaseous combustion. This work aims at extending the CSE formulation to address turbulent spray combustion. The Eulerian-Lagrangian method is ... -
Lattice Boltzmann Method for Simulating Turbulent Flows
(University of Waterloo, 2013-08-06)The lattice Boltzmann method (LBM) is a relatively new method for fluid flow simulations, and is recently gaining popularity due to its simple algorithm and parallel scalability. Although the method has been successfully ... -
Membrane Fouling During Hollow Fiber Ultrafiltration of Protein Solutions: Computational Fluid Modeling and Physicochemical Properties
(University of Waterloo, 2011-02-01)Hollow fiber ultrafiltration is a viable low cost alternative technology for the concentration or separation of protein solutions. However, membrane fouling and solute build up in the vicinity of the membrane surface ... -
Multi-scale Modeling of Chemical Vapor Deposition: From Feature to Reactor Scale
(University of Waterloo, 2009-09-25)Multi-scale modeling of chemical vapor deposition (CVD) is a very broad topic because a large number of physical processes affect the quality and speed of film deposition. These processes have different length scales ... -
Nanoparticle Focussing Using Aerodynamic Lenses and a Divergent Nozzle
(University of Waterloo, 2021-11-23)Since the COVID-19 pandemic has been a global crisis that has posed enormous and diverse challenges to humanity, it has revealed the urgent need for further study into a variety of properties of viruses, including virus ... -
A New Technique for Characterizing Multi-Temperature Convection with Application in Building Energy Simulation
(University of Waterloo, 2017-06-19)Glazing systems with attachments such as shades and insect screens are known as complex fenestration systems (CFS). The ASHRAE Window Attachment Tool (ASHWAT) for modeling heat transfer through a CFS are based on a general ... -
Numerical Schemes for 1-D Two-Phase Flows
(University of Waterloo, 2017-05-15)Modeling of two-phase flows with strong thermal and mechanical non-equilibrium ef- fects is important in engineering applications, such as the nuclear industry. The Advection Upstream Splitting Methods (AUSM-family schemes) ... -
Thermal Comfort Analysis Inside of a Recreational Vehicle
(University of Waterloo, 2020-01-27)The focus of the current study is on the numerical investigation of airflow and temperature distribution in a representative Class B Recreational Vehicle (RV) with the objective of optimizing the inlet and exhaust vent ... -
Towards Large Eddy Simulation of Boundary Layer Flows at High Reynolds Number: Statistical Modeling of the Inner Layer
(University of Waterloo, 2006)Most fluid flows of practical interest involve and are affected by turbulence. One of the most promising computational methods for the prediction of turbulent flows is the so-called large eddy simulation (LES) methodology. ...