NUMERICAL STUDY OF THE MEDIUM COMPRESSIBILITY EFFECT ON THE RAYLEIGH-TAYLOR INSTABILITY DEVELOPMENT

N.N. Anuchina, M.G. Anuchin, V.I. Volkov, A.E. Guseva, N.S. Eskov, V.N. Ogibina, A.V. Polionov, I.A. Potanina
VANT. Ser.: Mat. Mod. Fiz. Rroc 1990. Вып.2. С. 10-16.

      The medium compressibility effect on the Rayleigh-Taylor instability development is studied on the base of two-dimensional nonstationary gas dynamic computations using program complexes MAX and MECH. It is demonstrated that the medium compressibility leads to an increasing perturbation growth rate and an increasing mixing zone width and, in some cases, may drastically change the phenomenon character. The higher are the pressure gradients in the original flow, the more significant is the compressibility effect. The interpretation of the calculated results is given, which explains the physical mechanism of the compressibility effect.