Navier-Stokes simulation of burst vortex flowfields for fighter aircraft at high incidence

Abstract

A computational study has been conducted to investigate vortex breakdown on a generic fighter conf iguration operating at high incidence. The flow simulations are based on solutions of the full Reynolds-averaged Navier-Stokes equations using an implicit finite-difference algorithm. Results of the analysis have been correlated with an experimental data base obtained using a 3-D Laser Velocimeter system. Good correlation has been obtained between the analysis and the data base in terms of the vortex core path, cross-flow velocity fields and the approximate vortex breakdown onset location.