Vortex model for control of diffuser pressure recovery

The paper outlines an effort to develop moderate dimensional computational models of the shear instability and subsequent highly nonlinear vortex dynamics that occur in a planar diffuser. The ultimate goal is to use the model for testing and synthesis of a nontraditional approach to control that works by triggering instabilities rather than suppressing them. The models appear to capture many of the essential dynamical features, although quantitative discrepancies still need to be resolved