Numerical simulation of a developed shear turbulence

Results of two-dimensional numerical studies of turbulence that arises at the interface of two flows of poorly compressible gases are described. The results were obtained using a MAKh software system. The interrelation between spatial and time problems on the development of a turbulent zone induced by shear instability is analyzed. A constant that characterizes the degree of turbulent shear mixing is calculated. The effect of the density difference of the mixing fluids on the growth rate of the turbulence zone is studied. For all density differences considered, the coefficient of heterogeneity of the resultant mixture is evaluated. Institute for Technical Physics, Snezhinsk 456770. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 41, No. 1, pp. 77–83, January–February, 2000.