Isolating Flow-field Discontinuities while Preserving Monotonicity and High-order Accuracy on Cartesian Meshes
Air Force Research Laboratory (AFMC) AFRL/RQR Edwards AFB United States
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Introduction Filtering schemes offer a less dissipative alternative to the standard artificial dissipation operators when applied to high-order spatialtemporal schemes. Limiting Fact Filters impart the same amount of dissipation each time they are applied so if they are applied too frequently, they are overly dissipative. Limiting Fact Stiff systems require a preconditioned dual-time framework to be solved efficiently. Limiting Fact Filtering cannot be applied only at the physical-time level and convergence guaranteed. Limiting Fact Filtering cannot be straight forwardly applied atthe pseudo-time level.
- Fluid Mechanics