The work develops pressure diffusion items for low-diffusion upwind schemes to suppress carbuncle instability. This approach effectively restrains pressure perturbation inside the internal shock structure, thereby improving shock robustness. It can preserve contact discontinuity without additional numerical viscosity. Numerical cases demonstrate that it can provide a suitable candidate for hypersonic flow simulations.
Pressure Diffusion Item to Improve Shock Robustness for Low-Diffusion Upwind Schemes
2021-07-16
8679162 byte
Conference paper
Electronic Resource
English
Diffusion Characteristics of Upwind Schemes on Unstructured Triangulations
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