Assessment of Turbulence-Chemistry Interactions in Missile Exhaust Plume Signature Analysis

摘要

A computational study was undertaken to assess the impact of turbulence-chemistry interactions on the afterburning and afterburning shutdown characteristics of a generic amine booster. Turbulence-chemistry interactions were accounted for using an assumed PDF-based method. Analysis of the simulation results found turbulence-chemistry interactions modeled using the PDF method to have a first-order effect and to have a large impact on plume signatures as afterburning shutdown was approached. The PDF model was found to enhance plume afterburning and delay the onset of shutdown causing the plume to burn to higher altitudes than when the model was not included.