Resonant instability of tangential discontinuity in a compressible fluid

摘要: The excitation and stability of surface waves on the interface two compressible fluids moving with respect to each other in a two-dimensional channel is investigated. It shown that this case are always unstable. On hand, dispersion relation short long wavelength limits coincides incompressible infinite fluid, respectively. Furthermore, wave under resonant condition concluded due Cerenkov-like emission mechanism sound propagates fluid at rest. In case, growth rate instability compared for tangentially discontinuous wave. Likewise, using fluent software, dimensions simulated.