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Showing 1 to 7 of 7 for “"RAREFIED GAS DYNAMICS"”.
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An Approximation for the Twenty-One-Moment Maximum-Entropy Model of Rarefied Gas Dynamics
… methods to predict continuum and moderately rarefied flow offers many modelling and numerical advantages over traditional methods. The maximum-entropy family of moment closures offers models described by hyperbolic systems of balance laws. In particular, the twenty-one moment model of the …
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Modeling reactive rarefied flows in Chemical Vapor Infiltration using Direct Simulation Monte Carlo
… silicon carbide (SiC) matrix composites. Gas-phase precursors flow into a porous fiber, react, and deposit to form the ceramic matrix. Deposition quality and rate are strongly influenced by surface reactions, depending on temperature, gas flow, and reactor pressure. This study applies a …
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The discrete velocity method in plasma physics
… used discrete velocity method for problems in rarefied gas dynamics and is adapted for plasma physics in this thesis. The Boltzmann equation is used to model the relaxation to equilibrium of a pure electron plasma. The first of two problems studied is the relaxation of test particles in a …
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The Fn method in kinetic theory
… the method to several classical problems in rarefied gas dynamics. The method is based on the existing analysis for the vector transport equation arising from the decomposition of the linearized BGK equation. Using full-range orthogonality, a system of singular integral equations for the …
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Desalination of water by vapor transport through hydrophobic nanopores
… using a probabilistic model that incorporates rarefied gas dynamics, ballistic transport, and emission and reflection of water molecules at liquid-vapor interfaces. We then expand the model to transition regime where molecular diffusion coexists with the rarified gas transport. Effect of …
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Measurement of Continuum Breakdown Using a Disc Spin-Down Experiment in Low Pressure Air
As flow becomes rarefied, a quantity called as the tangential momentum accommodation coefficient (TMAC) becomes important because it is a measure of the momentum transport from a gas molecule to a surface. Very few experimental measurements of continuum breakdown in boundary layer flows exist. All …
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ΜΕΛΕΤΗ ΤΟΥ ΟΡΙΑΚΟΥ ΣΤΡΩΜΑΤΟΣ ΣΥΜΠΙΕΣΤΟΥ ΡΕΥΣΤΟΥ ΜΕ ΕΦΑΡΜΟΓΗ ΜΑΓΝΗΤΙΚΟΥ ΠΕΔΙΟΥ ΚΑΙ ΕΓΧΥΣΗ ΞΕΝΟΥ ΡΕΥΣΤΟΥ
… A MAGNETIC FIELD AND INJECTION OF A LIGHT FOREIGNGAS (HYDROGEN) IN THE HYPERSONIC LAMINAR BOUNDARY LAYER OF RAREFIED AIR OVER AFLAT PLATE ARE STUDIED. THE VARIABILITY OF THE MIXTURE PROPERTIES WITH TEMPERATURE AND HYDROGEN CONCENTRATION IS TAKEN INTO ACCOUNT. SLIP BOUNDARY CONDITIONSARE PROVIDED …