查看文章

Scaled experiments on the nonlinear Rayleigh–Taylor RT and Richtmyer–Meshkov RM instabilities are described for two limiting conditions. First, at high Reynolds number, the mixing layer is found to grow self-similarly iAgt2 for a constant acceleration and as a power law t i for an impulsive acceleration g U (t). The growth coefficients i and exponents i are measured over a comprehensive range of Atwood number A. Second, with non-Newtonian materials, the critical wavelength and amplitude for RT instability associated with the shear modulus and tensile yield of the material is observed over a variety of conditions. The results are applied to naturally occurring supernova explosions and volcanic islands. S1070-664X9990405-6