TRIMIX: A Vorticity-Stream Function Approach to Calculating Three-DimensionalMixing for Viscous, Parabolic Flows

摘要

A 3D Computer code (TRIMIX) has been developed to predict the influence of axialvorticity and diffusional velocity model on the rate of mixing between a primary flow and an injected secondary flow. Computational results are presented for the gain and iodine dissociation in an oxygen/iodine laser and compared with results obtained using the 1D premixed approximation. The premixed model significantly underpredicts laser performance; and the binary diffusion model and the zero vorticity approximation both lead to large error in the predicted gain. Keywords: Computation fluid dynamics, Mixing, Jets, Vorticity. (jhd)