Shock and shear layer interactions in a confined supersonic cavity flow

The impinging shock of varying strengths on the free shear layer in a confined supersonic cavity flow is studied numerically using detached eddy simulation. resulting spatiotemporal variations are analyzed between different cases unsteady statistics, x–t diagrams, spectral analysis, and modal decomposition. A length to depth ratio [ L / D ] = 2 at freestream Mach number M ? 1.71 considered be passage. Impinging strength controlled by changing ramp angle (?) top wall. static-pressure across ( p 1) used quantify strength. Five pressure ratio: 1.0 , 1.2 1.5 1.7, 2.0. As increases from 2.0, wall experiences maximum 25% due loading. At 1 1.5, fundamental fluidic mode or Rossiter's frequency corresponding n vanishes whereas frequencies correspond higher modes (n 4) resonate. Wavefronts interaction longitudinal reflections inside with transverse disturbances shock-shear interactions identified drive strong resonant behavior. Due passage shock-cavity resonance lost. Based present findings, an idea use shock-laden enclosed wall-jet configuration as passive control device also demonstrated.