Hybrid Reynolds-Averaged and Large-Eddy Simulation of Normal Injection into a Supersonic Crossflow

摘要

Injection through a circular port oriented normally to a Mach 1.6 crossflow is simulated using hybrid ReynoldsaveragednNavier–Stokes and large-eddy simulation turbulence models. The simulations compare the performance ofntwo related turbulence models. The standard formulation of the detached-eddy simulation equations is used in thencontext of a wall-modeled large-eddy simulation. A recently developed derivative of the detached-eddy simulationnformulation that was aimed at improving performance when operating as a wall-modeled large-eddy simulation isnalso used. These methods are used such that the large-scale turbulent structure of the flowfield can be resolved whilensimulating realistic Reynolds numbers. Simulations are performed on two grids to assess the influence of gridnresolution. Comparisons with flowfield visualizations from experiments are used to determine if the proper largescalenstructure is being resolved.Athorough validation of the results is performed by comparing with measurementsnof mean wall pressure from pressure-sensitive paint and measurements of mean velocity and turbulence intensitiesnfrom laser Doppler velocimetry. Results from the simulations are found to be in good agreement with the experiment.