Modelling Vortexlets Formation of Schardin’s Problem via a High Order Euler Solver

The present study investigates the shock diffraction problem over a triangular wedge for Mach number range of 1-2. For this purpose, we use a two-dimensional high-order in-house Euler solver that is based on a family of AUSM-flux splitting schemes coupled with a CENO scheme. The solver allows us to resolve the regions that contain discontinuities by means of a block-based adaptive mesh refinement algorithm that is based on smoothness indicator. By using the advantages of the solver, mesh dependency study was conducted at M=1.5 for refinement levels of 4, 5, and 6. From the results we assert that even though the general physics of the flow can be accurately resolved with all refinement levels, at least level 6 is required to capture the vortexlet formation appropriately.