High-Speed Multiphase Verification and Code-to-Code Comparison

Multiphase flow is commonplace in a variety of engineering and scientific applications. This paper presents a variety of one and two-dimensional compressible multiphase test case problems to document and analyze the differences between five different CFD frameworks. The test problems chosen include 1D problems: a multiphase shocktube problem, a Sedov blastwave problem, and a material interface advection problem. The 2D problems considered include shock water-cylinder interactions at shock Mach numbers of 1.47, 2.4, and 10, as well as a water-cylinder impingement problem (water-cylinder impacting a rigid wall). Mach 2.4 shock water-cylinder results are compared against experimental shadowgraph images. These test cases are solved on a coarse and refined mesh grid to test the solution’s sensitivity with respect to mesh resolution. Differences between the solutions are noted and discussed, and suggestions for future research and test cases are included.