Wall-modeled Large-Eddy Simulation (LES) of the HIFiRE scramjet

Visualization extracted from wall-modeled large eddy simulations (WMLES) of the HIFiRE scramjet, targeting the dual-mode operating regime at a flight Mach number of 6.5. Flow features are explored through instantaneous flow fields from particular snapshots, as well as their evolution in time. The simulations solve the spatially-filtered Navier-Stokes equations in a finite volume formulation on unstructured hexahedral meshes, integrating subgrid-scale models to account for effect of the unresolved turbulent scales, an equilibrium wall model to lower the otherwise computationally impractical near-wall resolution requirements, and a flamelet-based combustion model to account for the complex chemical reactions associated with the JP-7 surrogate hydrocarbon fuel. A solution-adaptive methodology is implemented to account for the different dominant physics that develop locally in each region of the flow: an essentially non-oscillatory (ENO) second-order shock capturing scheme is applied near shock waves, identifie