Article ID Journal Published Year Pages File Type
650965 European Journal of Mechanics - B/Fluids 2006 17 Pages PDF
Abstract

The flow of a rarefied gas, in a plane channel, is investigated, with special attention to the gas–surface interaction, modeled by the Cercignani–Lampis kernel that is defined in terms of normal and tangential accommodation coefficients. An analytical version of the discrete-ordinates method is used to solve, in an unified approach, the Poiseuille flow, thermal-creep flow and Couette flow problems with kinetic equations defined in terms of the BGK model. Numerical results for the velocity and heat-flow profiles and flow rates are reported, for a wide range of the accommodation coefficients and the Knudsen number.

Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes