Library Subscription: Guest
TSFP DL Home Archives Executive Committee

A COMPUTATIONAL STUDY OF THE GENERATION AND DECAY OF AIRCRAFT WINGTIP VORTICES

Timothy J. Craft
Turbulence Mechanics Group, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, PO Box 88, Manchester M13 9PL, UK

Brian E. Launder
School of Mechanical, Aerospace & Civil Engineering, The University of Manchester, PO Box 88, Manchester M60 1QD, UK

C. M. E. Robinson
School of Mechanical, Aerospace & Civil Engineering, The University of Manchester, Manchester M60 1QD, UK

Abstract

Computations are reported of the flow over a NACA 0012 half-wing with rounded wing tip. The aim is to test the performance of a number of turbulence models in capturing the generation and near-field decay of the strongly accelerated vortex that is shed from the tip. Results using linear and non-linear eddy-viscosity models are presented, but these all exhibit too rapid a decay of the vortex core, and it is only an advanced stress transport model that is shown to reproduce many of the features found in the experimental measurements.