QUASIREGULAR TECHNIQUE FOR MULTIDIMENSIONAL GAS DYNAMICS PROBLEM COMPUTATIONS USING RAMZES PROGRAM SYSTEM

A.G. Kozub, O.A. Pronina
VANT. Ser.: Mat. Mod. Fiz. Proc 2000. Вып.1. С. 8-15.

The fundamental tenets of quasiregular technique for computing gas dynamics processes of multidimensional time--dependent problems are presented. The technique proposed has its origins in regular Eulerian-Lagrangian technique of RAMZES program system and in multigrid method for splitting by spatial directions. The results of methodical calculations demonstrate efficiency of the technique and the programs implementing it.

Algorithms and programs for global reconstruction of 2D computational grid in RAMZES complex are described. For recalculating grid values unconventional algorithms are proposed based on representation of lines and polygons by their raster scan, used in computer graphics. Specific examples demonstrate serviceability and efficiency of the methods and programs developed.