Abstract
Based on the IDDES method, the M219 cavity is simulated in flux-mixed scheme, with the main purpose of studying the mechanism of the noise generation in the cavity flow and proposing corresponding suppression measures. The study mainly includes the grid resolution study and the numerical simulation of the leading edge bump. Through the comparative analysis with the experimental results provided by Henshaw et al. and the LES results from Haase et al. it is known that the different grids in this paper can all obtain the flow characteristics of the cavity flow, and the different grids show the convergence. The leading edge bump can significantly raise the shear layer, reduce the disturbance flowing into the cavity, and play a role in suppressing both the cavity tones and the broadband of the cavity flow.
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