Simulation of Compressible Stratified Flows by the Finite Difference Lattice Boltzmann Method

For a compressible fluid under gravitational force, the density stratification is not enough and the entropy stratification is essential. In this report, we present the numerical simulation of a line sink compressible straified flow in two-dimensional channel by the finite difference lattice Boltzmann method. The results show that selective withdrawal is establithed when the entropy increase upward that is predicted by theoretical consideration.