Maxwell boundary condition and velocity dependent accommodation coefficient

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Physics of Fluids (1994)

DOI:https://doi.org/10.1063/1.4829907· OSTI ID:22257202

Struchtrup, Henning ^[1]

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1. Department of Mechanical Engineering, University of Victoria, Victoria, British Columbia V8W 2Y2 (Canada)

A modification of Maxwell's boundary condition for the Boltzmann equation is developed that allows to incorporate velocity dependent accommodation coefficients into the microscopic description. As a first example, it is suggested to consider the wall-particle interaction as a thermally activated process with three parameters. A simplified averaging procedure leads to jump and slip boundary conditions for hydrodynamics. Coefficients for velocity slip, temperature jump, and thermal transpiration flow are identified and compared with those resulting from the original Maxwell model and the Cercignani-Lampis model. An extension of the model leads to temperature dependent slip and jump coefficients.

• OSTI ID: 22257202
• Journal Information: Physics of Fluids (1994), Vol. 25, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-6631
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOLTZMANN EQUATION
BOUNDARY CONDITIONS
HYDRODYNAMICS
PARTICLE INTERACTIONS
SLIP
TEMPERATURE DEPENDENCE
VELOCITY