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

最初开发用于模拟无粘性流动的非结构化冲击拟合算法已得到进一步开发，使其能够处理冲击波/边界层相互作用 (SWBLI)。本文说明了该技术新实现的算法特征及其在代表三种不同 SWBLI 模式的二维流配置中的应用。还给出了在几乎相同的网格上使用上述冲击拟合和“最先进”的冲击捕获技术获得的数值解之间的详细比较。更具体地说，提出了定性和定量的网格收敛分析，以显示与冲击捕获相比，冲击拟合在降低离散化误差和改进收敛阶数方面取得的重大成就。