SMOOTHING ALGORITHMS OF VELOCITY FIELD PERTURBATIONS AS APPLIED TO D SIMULATIONS
Yu. D. Chernyshev, I. A. Odintzova, I. I. Murugova
VANT. Ser.: Mat. Mod. Fiz. Proc 2012. Вып.2. С. 3-15.
Described here are algorithms of quadratic and new linear velocity smoothing implemented in the framework of D technique. Three algorithms of inner energy simulation required for total energy conservation, are described. Perturbation (bad cells) algorithm is suggested to avoid velocity field perturbation, the so-called sand-glass, as well as the increase criterion of angular and contour linear smoothing required to reduce bad cells. Given here are test results using the algorithms suggested.Keywords: D technique, gas dynamics, velocity smoothing, stability, 2D simulations.
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