Πλοήγηση ανά Θέμα "Knudsen number"
Αποτελέσματα 1-12 από 12
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Application of the integro-moment method to steady-state two-dimensional rarefied gas flows subject to boundary induced discontinuities
(2008)The computational efficiency of the integro-moment method for solving steady-state two-dimensional rarefied gas flows is investigated. The two-dimensional boundary driven flow of a single gas in a cavity is used as a model ... -
Experimental and numerical investigation in flow configurations related to the vacuum systems of fusion reactors
(2010)Vacuum flows in various configurations, which are related to fusion reactors are simulated using linear kinetic theory and the direct simulation Monte Carlo method (DSMC), in the whole range of the Knudsen number. In the ... -
The friction factor of a rarefied gas flow in a circular tube
(2007)An expression for the estimation of the Poiseuille number for internal rarefied flows is developed. The derived formula is given in terms of dimensionless quantities, which are obtained by the solution of the flow based ... -
Gas flow and heat transfer simulation in MEMS via a mesoscopic approach
(2004)The flow problem of binary gaseous mixtures in rectangular micro channels due to small pressure, temperature and molar concentration gradients over the whole range of the Kn number is solved. The solution is based on a ... -
Gas flow in a grooved channel due to pressure and temperature gradients
(2006)The flow of a gas in a grooved nano or micro channel, due to the imposed pressure and temperature gradients in the longitudinal direction, is investigated via a kinetic approach. The solution is valid in the whole range ... -
Gas-surface scattering effect on vacuum gas flows through rectangular channels
(2011)Flow of a rarefied gas through a channel of rectangular cross section is investigated numerically and experimentally. Emphasis is given on the study of the molecular scattering law influence at the wall boundary surfaces. ... -
Gaseous mixture flow between two parallel plates in the whole range of the gas rarefaction
(2004)The flow of binary gaseous mixtures between two parallel plates driven by gradients of pressure, temperature and concentration is studied, based on the McCormack model of the Boltzmann equation. The coupled kinetic equations ... -
Heat transfer through rarefied gases between coaxial cylindrical surfaces with arbitrary temperature difference
(2010)The problem of nonlinear heat transfer through a rarefied gas confined between concentric cylinders maintained at different temperatures is investigated. The formulation is based on the nonlinear Shakhov kinetic model ... -
Kinetic modeling of a tapered Holweck pump
(2014)The Holweck pump is a device widely used in many pumping systems. It can be a self-standing device or part of a multi-stage system, usually combined with a turbo-molecular pump (TMP). In the present work, an existing ... -
Pressure driven rarefied gas flow through a slit and an orifice
(2012)The flow of a monatomic gas through a slit and an orifice due to an arbitrarily large pressure difference is examined on the basis of the nonlinear Bhatnagar-Gross-Krook (BGK) model equation, subject to Maxwell diffuse ... -
Rarefied gas flow through tubes of finite length
(2009)The flow of rarefied gases through tubes of finite length due to a pressure gradient is investigated by the Direct Simulation Monte Carlo (DSMC) method. The non-equilibrium effects at the inlet and outlet of the tube have ... -
Unsteady vacuum gas flow in cylindrical tubes
(2011)The starting gas flow in a cylindrical channel is investigated in the whole range of the Knudsen number by numerically solving the governing time dependent kinetic equations in a fully deterministic manner. The gas is ...