NONREFLECTING BOUNDARY CONDITION FOR SMALL PERTURBATIONS IN GAS-DYNAMIC SCHEMES ON SPACED GRIDS
Yu. A. Bondarenko, E. A. Goncharov, V. Yu. Kolobyanin, Yu. V. Yanilkin
VANT. Ser.: Mat. Mod. Fiz. Proc 2007. Вып.3-4. С. 64-74.
Described here is nonreflecting boundary condition for gas-dynamic problems using Lagrange and Lagrange-Euler counting grids. This condition is realized for two-dimensional (2D) gas-dynamic EGAK technique. 2D test problem has been stated for which the numerical simulation has been performed using the suggested nonreflecting boundary condition. The calculation results in ID and 2D approximation show high efficiency and accuracy of the suggested technique. The algorithms of nonreflecting boundary condition are quite general and can be used in other techniques using velocity representation in counting grid nodes, and density and energy representation — in grid centers.
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