Numerical simulation of shock/boundary-layer interaction using an unstructured shock-fitting technique

An unstructured, shock-fitting algorithm, originally developed to simulate inviscid flows, has been further developed to make it capable of dealing withshock-wave/boundary-layer interactions (SWBLI). This paper illustrates thenewly implemented algorithmic features of this technique and its applicationto two-dimensional flow-configurations representative of three different SWBLI patterns. A detailed comparison between the numerical solutions obtained us-ing the aforementioned shock-fitting and a “state-of-the-art” shock-capturingtechnique on nearly identical meshes will also be given. More specifically, qualitative and quantitative grid-convergence analyses will be presented to show the significant achievements in terms of reduced discretization error and improvedorder-of-convergence that shock-fitting delivers, compared to shock-capturing.