Computing compressible internal flows by means of an Immersed Boundary Method

•Compressible solver coupled with Immersed Boundary Technique validated with several computational test cases.•Specific boundary conditions for IBM: slip and injecting wall.•Solver development opened to multiphysics.

This paper provides an Immersed Boundary Method for computing compressible internal flows. In view of future applications to combustion problems and hypersonic flows, wall-slip and wall-injection boundary conditions are implemented. A 2n-tree mesh-refinement algorithm is employed for combined accuracy and efficiency. The method and the new boundary conditions are tested with success versus well-documented test cases, by means of detailed mesh-refinement studies.