SELF-SIMILAR RAREFACTION WAVE FOR A MODEL OF A HETEROGENEOUS TWO POLYTROPIC GASES MIXTURE

O. V. Buryakov, V. F. Kuropatenko
VANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1987. Вып.1. С. 11-14.

      For a commonly used model of a heterogeneous medium accounting component velocity nonequilibrium, an exact solution is derived for a piston pulled out with a sufficiently high speed from a heterogeneous mixture of two polytropic gases. The derivation is carried out assuming the component pressures to be locally equivalent.
      The resulting solution together with a similar one previously obtained for another commonly used heterogeneous medium model allowed to compare these types of models on one class of solutions.