A5009602765- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Laser-Plasma Interactions and Diagnostics
- Refrigeration and Air Conditioning Technologies
- Plasma and Flow Control in Aerodynamics
- Turbomachinery Performance and Optimization
- Aerodynamics and Acoustics in Jet Flows
- Fluid Dynamics and Vibration Analysis
- High-pressure geophysics and materials
- Particle Dynamics in Fluid Flows
- Combustion and flame dynamics
- High-Velocity Impact and Material Behavior
- Cellular Automata and Applications
- Methane Hydrates and Related Phenomena
- CO2 Reduction Techniques and Catalysts
- Advanced Numerical Methods in Computational Mathematics
- Wind and Air Flow Studies
- Electrocatalysts for Energy Conversion
- Advanced Aircraft Design and Technologies
- Ocean Waves and Remote Sensing
- Aerodynamics and Fluid Dynamics Research
- Elasticity and Material Modeling
- Advanced Numerical Analysis Techniques
- Coastal and Marine Dynamics
- Combustion and Detonation Processes
University of Windsor
2018-2024
California Institute of Technology
2002-2021
Large-eddy simulations of the Richtmyer–Meshkov instability with reshock are pre- sented and results compared experiments. Several configurations shocks initially travelling from light (air) to heavy (sulfur hexafluoride, SF6) have been simulated match previous experiments good agreement is found in growth rates turbulent mixing zone (TMZ). The stretched-vortex subgrid model used this study allows for continuation modelling, where statistics unresolved scales flow estimated. In particular,...
We study the shock-driven turbulent mixing that occurs when a perturbed planar density interface is impacted by shock wave of moderate strength and subsequently reshocked. The present work systematic influence relative molecular weights gases in form initial Atwood ratio A . investigate cases = ± 0.21, ±0.67 ±0.87 correspond to realistic gas combinations air–CO 2 , air–SF 6 H –air. canonical, three-dimensional numerical experiment, using large-eddy simulation technique with an explicit...
The behaviour of an initially planar shock wave propagating into a linearly convergent wedge is investigated experimentally and numerically. In the experiment, 25° internal mounted asymmetrically in pressure-driven tube. Shock waves with incident Mach numbers ranges 1.4–1.6 2.4–2.6 are generated nitrogen carbon dioxide. During each run, full pressure history recorded at fourteen locations along faces schlieren images produced. Numerical simulations performed based on compressible Euler...
We present an analytical study of the linearized impulsive Richtmyer-Meshkov flow for incompressible elastic solids. Seminumerical prior investigations a related shock-driven compressible problem suggest that interface amplitude remains bounded in time, contrast to unstable behavior found gases. Our approach considers base unperturbed and linearization conservation equations around solution. The resulting initial boundary value is solved using Laplace transform techniques. Analysis...
For the purposes of computer graphics, we have developed a simulation tool to model fluid flow on surface sphere with inclusion control parameters for benefit art directability. Difficulties associated use spherical coordinates were surmounted by locally modified consistent equations that result from an analysis singular in neighborhood poles. The resulting system was solved efficiently only small additional cost when compared two-dimensional planar simulation.
Aeroengine fans and compressors increasingly operate subject to inlet distortion in the transonic flow regime. In this paper, innovations low-order numerical modeling of via volumetric source terms (body forces) are presented. The approach builds upon past work accommodate any axial fan/compressor geometry ensures accurate input efficiency prediction across a range coefficients. particular, drop-off near choke is captured. model for particular blade row calibrated using data from...
Abstract This paper numerically explores the manner in which blade row inlet incidence variation scales with various distortion patterns and intensities. The objectives are to (1) identify most appropriate parameter whose circumferential can be used assess scaling relationships of a transonic compressor (2) use this evaluate two types non-uniform inflow patterns, vertically stratified total pressure distortions radially enthalpy distortions. A body force model rows is employed reduce...
We present an approximate description of the behavior elastic-plastic material processed by a cylindrically or spherically symmetric converging shock, following Whitham's shock dynamics theory. Originally applied with success to various gas problems, this theory is presently derived for solid media, in both elastic and plastic regimes. The exact solutions equations obtained reproduce well results high-resolution numerical simulations. examined constitutive laws share compressible neo-Hookean...
The study and application of transition metal hydrides (TMH) has been an active area chemical research since the early 1960’s. use TMHs broadly bifurcated into fields focused on energy storage through reduction protons to generate hydrogen in organic synthesis for functionalization unsaturated C–C, C–O, C–N bonds. In former instance, electrochemical means driving such reactivity commonplace 1950’s. contrast, stoichiometric exogenous metal-based reductants harness power synthetic chemistry...
The shape and stability of two–dimensional, uniform patches vorticity in incompressible inviscid fluid are calculated. object the study is to investigate effect wind shear on trailing vortices. modelled by simple with velocities plane perpendicular vorticity. first portion this models vortices as a pair straight counter–rotating line which essentially point They move under their self–induced external shear. It shown that equations for positions can be solved exactly, they parabolic...
Abstract This paper is a detailed computational study of the flow within scale model gas turbine engine testing facility. At mass flows representative tests for large, high bypass ratio turbofans, large amplitude low-frequency pressure fluctuations have been observed experimentally at full- and model-scale. These can be so as to deleterious effects on downstream facility components. Improved, delayed, detached eddy simulations (IDDES) are carried out two operating points using OpenFOAM: one...
This paper describes a hybrid finite-difference method for the large-eddy simulation of compressible flows with low-numerical dissipation and structured adaptive mesh refinement (SAMR). A conservative flux-based approach is described an explicit centered scheme used in turbulent flow regions while weighted essentially non-oscillatory (WENO) employed to capture shocks. Three-dimensional numerical simulations Richtmyer-Meshkov instability are presented.