Dynamic Response of Rocket Swirl Injectors, Part II: Nonlinear Dynamic Response

Nonlinear boundary element calculations are used to compare and contrast results from the linear theories described in Part I of the study. Parametric evaluations are conducted to assess the influence of vortex chamber dimensions, convergence angle, nozzle length, injector flow rate, and pulsation magnitude on dynamic response characteristics. Resonant frequencies are compared against the linear theory. Overall magnitude of frequency response is characterized for a wide range of injector designs.