Abstract
This paper concerns the numerical analysis of rarefied gas flowing through an orifice in a rotating cylinder. The full solutions for the Burnett equations in the steady state are successfully obtained and compared with those for the Navier-Stokes equations. Then, the pressure in the downstream side is chosen as a parameter to give an appropriate Knudsen number and a Much number. The results show construction of the rarefied gas flow, where the Burnett terms, or the higher order of approximation, reduces the contribution of the viscosity term in the equation of motion and of the conduction term in the equation of energy. The criteria of invalidity for the Navier-Stokes equations and the Burnett equations are discussed, too.
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