Numerical Simulations of Fluidic Control for Transonic Cavity Flows

A numerical study is conducted to investigate fluidic control for transonic flow over an open cavity. Numerical results are obtained for the unsteady threedimensional flow with different steady mass injection rates upstream of the cavity. The simulations use a hybrid two-equation turbulence model in the Detached Eddy Simulations (DES) to calculate the flow and acoustic fields. Computational results are presented for RMS pressure load, SPL and kinetic energy spectra. Vorticity, Mach number, and kinetic energy contours are shown at different injection ratios. The computed sound pressure level (SPL) spectra without injection is compared with available experimental data. Nomenclature

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