Physics of Fluids, Год журнала: 2025, Номер 37(5)

Опубликована: Май 1, 2025

The effects of initial conditions on the mixing layer in two-dimensional multimode stratified compressible Rayleigh–Taylor instability (RTI) are investigated through direct numerical simulations with five wave amplitudes (10−2 to 10−6) and numbers (1–30 121–150) at a high Atwood number 0.9. In contrast quadratic growth observed incompressible RTI, bubble RTI exhibits additional due mean flow induced by compressibility. width hb, caused both fluctuating flows, is sensitive conditions. width, flow, remains strong dependence amplitude number. compressibility, can be rescaled its total hb. long-wave perturbations but not short-wave perturbations. Furthermore, characteristics, including mixedness, mixed mass, normalized also analyzed under different

Язык: Английский