Review of Vortex Methods for Simulation of Vortex Breakdown

The aim of this work is to identify current developments in the field of vortex breakdown modelling in order to initiate the development of a numerical model for the simulation of F/A-18 empennage buffet. Some attempts at using vortex models for prediction of vortex breakdown were found in the open literature. Their advantages and shortcomings are discussed, allowing the evaluation of their feasibility for the computation of LEX vortex burst. It was concluded that vortex methods are able to simulate an onset of breakdown in simple vortical flows. However, their predictive abilities require further improvement to provide accurate modelling of the temporal and spatial characteristics of the unsteady pressure field past a burst LEX vortex.