Rozwiązanie zagadnienia przepływu idealnego czynnika ściśliwego w palisadzie profili metodą wariacyjną

A variational approach to a problem of the flow of a non-viscous, compressible liquid in flow machines has been presented. The properties of the first and the second variation of the energy functional have been investigated as well as a method of solution of nonlinear variational equation. Theoretical investigations have been illustrated by numerical examples. The numerical results have been obtained by FEM method with quadrangle element isoparametric with 9 knots.