Large eddy simulation of two separated hypersonic shock/turbulent boundary layer interactions
Clara M. Helm, M. Pino Martı́n
Abstract
We present a detailed statistical description of turbulence in the high-fidelity Large Eddy Simulation (LES) of hypersonic shock-and-turbulent boundary layer interactions with strong separation. Our high-fidelity LES method uses a 4th-order, bandwidth-optimized Weighted Essentially Non-Oscillatory (WENO) scheme combined with a robust shock-capturing method and dynamic mixed model formulations for the closure of subgrid scale terms. Our mixed models, which contain a scale-similar term in addition to the purely dissipative one, are shown to accurately and significantly improve separation prediction compared to purely dissipative closures, such as the dynamic eddy viscosity formulation.
Topics & Concepts
Hypersonic speedLarge eddy simulationDissipative systemBoundary layerTurbulenceShock (circulatory)MechanicsStatistical physicsTurbulence modelingPhysicsClosure (psychology)Separation (statistics)Classical mechanicsApplied mathematicsComputer scienceMathematicsThermodynamicsMedicineEconomicsInternal medicineMachine learningMarket economyFluid Dynamics and Turbulent FlowsComputational Fluid Dynamics and AerodynamicsWind and Air Flow Studies