Multiple helical modes of vortex breakdown

Evolution and breakdown of helical vortex wakes behind a wind turbine

A. Nemes1, M. Sherry, D. Lo Jacono1,2,3, H. M. Blackburn4 and J. Sheridan1 1 Fluids Laboratory for Aeronautical and Industrial Research (FLAIR), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Vic 3800, Australia 2 Université de Toulouse; INPT, UPS; IMFT; Allée Camille Soula, F-31400 Toulouse, France 3 CNRS; IMFT; F-31400 Toulouse, France 4 Department of Mechan...

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 fea...

Numerical Simulation of Vortex Breakdown by the Vortex-Filament Method

A Coaxial Vortex Ring Model for Vortex Breakdown

Denis Blackmore Department of Mathematical Sciences and Center for Applied Mathematics and Statistics New Jersey Institute of Technology Newark, NJ 07102-1982 [email protected] ∗ ∗ ∗ Morten Brøns Department of Mathematics Technical University of Denmark DK-2800 Kgs. Lyngby, Denmark [email protected] ∗ ∗ ∗ Arnaud Goullet Department of Mathematical Sciences New Jersey Institute of Technology New...

Visualization Methods for Vortex Rings and Vortex Breakdown Bubbles

Vortex breakdown bubbles are a subject which is of interest in many disciplines such as aeronautics, mixing, and combustion. Existing visualization methods are based on stream surfaces, direct volume rendering, tensor field visualization, and vector field topology. This paper presents a topological approach which is more closely oriented at the underlying theory of continuous dynamical systems....