Rarefied gas flow in microtubes at low Reynolds numbers

Abstract

Low Reynolds number, axisymmetric, isothermal, compressible, slip gas flow in microtubes is investigated in this paper. The problem is solved by the continuum equations, continuity and Navier-Stokes, along with Maxwell first order boundary condition. The analytical results are obtained by perturbation method. The solutions show a good agreement with experimental results.

Keywords

• microtube
• slip gas flow
• rarefaction
• perturbation expansion