Rayleigh-Taylor instability for compressible rotating flows

The Rotating Rayleigh-Taylor Instability

Rayleigh-Taylor Instability in a Compressible Fluid

Rayleigh-Taylor instability in a compressible fluid is reconsidered. The density is allowed to vary with pressure under the barotropy assumption. For the case with equal speeds of sound in the two superposed fluids, in order to give a non-trivial compressibility correction to the Rayleigh-Taylor growth rate, the compressibility correction is calculated to O(g/ka). To this order, compressibility...

Thermo-hydrodynamic non-equilibrium effects on compressible Rayleigh-Taylor instability

The effects of compressibility on Rayleigh-Taylor instability (RTI) are investigated by inspecting the interplay between thermodynamic and hydrodynamic non-equilibrium phenomena (TNE, HNE, respectively) via a discrete Boltzmann model (DBM). Two effective approaches are presented, one tracking the evolution of the local TNE effects and the other focussing on the evolution of the mean temperature...

Three-dimensional Compressible Rayleigh-taylor Instability on the Intel Paragon

Results are described of computations of 3D compressible Rayleigh-Taylor instability done on the 512 node Intel Paragon at Caltech. The code uses Flux Corrected Transport to solve the Euler equations of hy-drodynamics. The Rayleigh-Taylor instability is an important mixing mechanism in a variety of ows such as supernovae and inertial con-nement fusion. Results of the simulations have been chara...

Rayleigh–Taylor instability in cylindrical geometry with compressible fluids

A linear stability analysis of the Rayleigh–Taylor instability RTI between two ideal inviscid immiscible compressible fluids in cylindrical geometry is performed. Three-dimensional 3D cylindrical as well as two-dimensional 2D axisymmetric and circular unperturbed interfaces are considered and compared to the Cartesian cases with planar interface. Focuses are on the effects of compressibility, g...