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 9 of 9 for “"Non-Equilibrium Flows"”.
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Maximum entropy quadratic model to characterize chemical non-equilibrium in re-entry flows
This thesis presents the study of an advanced non-equilibrium model for state-specific chemical kinetics based on method of moments. The focus of this project is on the rovibrational chemical kinetics of the N2-N system. Internal excitation, dissociation, recombination and energy transfer …
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Multi-scale modeling of laser induced breakdown in non-equilibrium plasmas
… control and ignition of combustible mixtures). A non-equilibrium model for laser-plasma interaction has been developed and validated for the purpose of this study. The computational framework has been, then, used to investigate the plasma kernel dynamics under different ambient conditions (e.g., …
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Overview of the Skin Friction measurements on the NASA BeVERLI Hill using Oil Film Interferometry
… project aims to develop a detailed database of non-equilibrium, separated turbulent boundary layer flows obtained through wind tunnel experiments for CFD validation. Skin friction measurements are obtained at specific critical locations on the hill and in its close proximity. The challenges …
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Consistent treatment of transport properties of weakly-ionized gas mixtures in DSMC
… is widely used for solving rarefied and highly non-equilibrium flows. The transport properties in DSMC are obtained as a result of the transport of mass, momentum and energy during binary collision processes between the simulated particles. The details of the collision processes, and therefore, …
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Transport of Heat and Momentum In Non-Equilibrium Wall-Bounded Flows
<p>Transport of momentum and heat in non-equilibrium wall-bounded flows is studied analytically and experimentally to better understand the underlying physics, transition dynamics, and appropriate flow scaling in non-equilibrium flows. Non-equilibrium flows, in which the mean flow time scales are …
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The Resolution and Structure of High Reynolds Number Turbulent Boundary Layers Over Rough and Smooth Walls in Pressure Gradient
… number, turbulent, wall boundary layers in non-equilibrium pressure gradients are experimentally investigated. Experiments in two wall configurations were performed; one with a hydrodynamically smooth test wall composed of flat aluminum panels, and the other with a rough surface consisting …
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Development of a high-fidelity thermochemical model for the O2+O system using direct simulation Monte Carlo
… investigation of reactions in a thermo-chemical non-equilibrium condition, which is especially with the application with the flows encountered during atmosphere entry/re-entry missions. The particle-based computational method, direct simulation Monte Carlo(DSMC), has been widely used for the …
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Single polymer dynamics in semi-dilute solutions: linear and ring polymers
… and the role of intermolecular interactions in non-equilibrium flows. Over the past two decades, single molecule techniques have been established to investigate molecular-level dynamics, thereby allowing direct access to polymer chain relaxation mechanisms and polymer non-linear response under a …
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Continuum breakdown assessment and state-based transport modeling for non-equilibrium hypersonic flows
… for simulating the thermal and chemical non-equilibrium encountered in these high speed flows are multi-temperature computational fluid dynamics (CFD), direct simulation Monte Carlo (DSMC), and hybrid CFD/DSMC solvers that capitalize on the advantages of both methodologies. Improving the …