科研成果详情

We present a two-phase flow formulation for the statistical evolution of fluid mixing via Rayleigh-Taylor instability. Our main results are a new first-order closure for the ensemble-averaged two-phase flow equations, its validation against computational data for compressible flows, and an exact renormalization-group fixed-point solution of this model in the incompressible limit. We do not fully solve the closure problem, as the boundary conditions at the most penetrating edges of the fluid mixing layer are left unresolved in our model.