Volume 8, no. 2Pages 127 - 132

Computational Experiment for One Mathematical Model of Ion-acoustic Waves

A.A. Zamyshlyaeva, A.S. Muravyev
In the article the mathematical model of ion-acoustic waves in a plasma in an external magnetic field is studied. This model can be reduced to a Cauchy problem for a Sobolev type equation of the fourth order with polynomially (A,p)-bounded operator pencil. Therefore abstract results on solvability of the Cauchy problem for such equation can be used. In the article a theorem on the unique solvability of the Cauchy - Dirichlet problem is mentioned. Based on the theoretical results there was developed an algorithm for the numerical solution of the problem, using a modified Galerkin method. The algorithm is implemented in Maple. The article includes description of this algorithm. It is illustrated by model examples showing the work of the developed program.
Full text
mathematical model; ion-acoustic waves; Galerkin method.
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