Motion of a multicomponent sorbed mixture in a porous medium when the medium is preliminarily saturated with certain components of the mixture

The numerical and invariant solutions of a system of quasilinear equations in partial derivatives, describing the motion of a multicomponent sorbed gas (or liquid) mixture through a porous medium previously saturated by certain sorbed components of the mixture, are analyzed; in the presence of Langmuir sorption isotherms, invariant solutions are obtained in the form of Riemann invariants.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 1, pp. 50–56, January–February, 1976.