A KIND OF SINGULAR PERTURBATION METHOD FOR SOLVING THE BOLTZMANN EQUATION WITH SMALL KNUDSEN NUMBER
具有小Knudsen数的Boltzmann方程的奇异扰动解法

A kind of singular perturbation method is used to remove secular terms in Hilbert expansion and Enskog expansion of the normal solution and those in Grad expansion of the "initial layer" solution of Boltzmann equation (B.e.). The problem of solving B.e. in the "boundary layer" is reduced to that of solving a set of linear algebraic equations.