Numerical Simulation of Rarefied Gas Flows with Specified Heat Flux Boundary Conditions

Numerical Simulation of Rarefied Gas Flows with Specified Heat Flux Boundary Conditions

Year:    2015

Communications in Computational Physics, Vol. 17 (2015), Iss. 5 : pp. 1185–1200

Abstract

We investigate unidirectional rarefied flows confined between two infinite parallel plates with specified heat flux boundary conditions. Both Couette and force-driven Poiseuille flows are considered. The flow behaviors are analyzed numerically by solving the Shakhov model of the Boltzmann equation. We find that a zero-heat-flux wall can significantly influence the flow behavior, including the velocity slip and temperature jump at the wall, especially for high-speed flows. The predicted bimodal-like temperature profile for force-driven flows cannot even be qualitatively captured by the Navier-Stokes-Fourier equations.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.2014.m343

Communications in Computational Physics, Vol. 17 (2015), Iss. 5 : pp. 1185–1200

Published online:    2015-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    16

Keywords: