Ghost cell methods on adaptive cartesian grids

In this paper,the local refined Cartesian grid is used to simulate stationary objects.Various Ghost cell methods are described and used to evaluate inviscid compressible flow with immersed boundary.In order to get further information,we compare the various Ghost cell boundary conditions under the consideration of relative entropy and total pressure error.Furthermore,the dag coefficients are compared.In order to improve the resolutions of the shock and wake flow,tree structure adaptive Cartesian grid is adopted,and the adaptive criterion of solution is presented.Numerical results show that this method is very effective.