Author(s)

S.D. Heister

Abstract

Simulating two-phase flows inside high-speed injectors S.D. Heister School of Aeronautics and Astronautics, Purdue University, W. Lafayette, IN Abstract Two and three dimensional, unsteady, two-phase flow calculations are pre- sented for cavitating or flashing flows inside high-speed atomizers. A homo- geneous flow methodology is employed in which the fluid pseudo-density is computed from a constitutive relation based on the Rayleigh-Plesset equa- tion. 1 Introduction The influence of injector orifice design has long been known to be a key feature influencing the jet/spray characteristics from these devices. In spite of this fact, relatively little analysis or experiments have been focused on this area in favor of scores of studies on the effects which have taken place outside the orifice passage. This state of affairs is explained by the difficulty in observing these internal flows; transparent test articles must be manu- factured and even in this case light refraction can

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