A nonlinear compressible flow disturbance formulation for adaptive mesh refinement wavepacket tracking in hypersonic boundary-layer flows

A new numerical approach for simulating nonlinear wavepackets in hypersonic boundary-layers is presented. The adaptive mesh refinement wavepacket tracking (AMR-WPT) method has been developed as an efficient alternative to conventional direct simulations (DNS). AMR-WPT employs the disturbances equations (NLDE), overset dual with higher-order interpolation, and (AMR) track boundary-layer flows. After introducing details, used simulate linear axisymmetric M=9.81 straight cone 2-D/3-D M=5.35 flat plate boundary-layer. simulation results are compared against classical stability transition prediction tools, such theory (LST), parabolized (PSE) DNS. It demonstrated that requires only about 10% of number grid points when DNS a inside flow. • Developed novel method, AMR-WPT, wavepackets. Combined disturbance flow solver AMR, dual-overset approach, tracking. Validated test cases approaches, i.e. , LST, PSE, Demonstrated capabilities prediction. significant computational savings static approaches.