On the three-dimensional nature of the orthogonal vortex interaction

Green, R. , Coton, F. and Early, J.M. (2006) On the three-dimensional nature of the orthogonal vortex interaction. Experiments in Fluids, 41(5), pp. 749-761. (doi: 10.1007/s00348-006-0198-6)

Abstract

An orthogonal blade–vortex interaction has been visualised using stereo particle image velocimetry. Significant changes to the vortex axial flow w component velocity are observed during the interaction, with a deceleration on the lower surface of the blade where the vortex axial flow is towards the blade surface. Over this surface the interaction process close to the blade surface spreads the vorticity out to the areas of oppositely signed blade w component, and the results suggest a non-uniform spreading over the leading edge region of the blade, with a tendency for a spanwise transport of vorticity. Over the upper surface of the blade, the vortex axial flow velocity increases and the vortex core shrinks slightly. During the lower surface interaction the vorticity and velocity vectors become significantly realigned with respect to one another, while this is not observed for the upper surface interactio

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Green, Dr Richard and Coton, Professor Frank
• Authors: Green, R., Coton, F., and Early, J.M.
• Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics; Q Science > QC Physics
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• Journal Name: Experiments in Fluids
• Publisher: Springer Verlag
• ISSN: 0723-4864
• ISSN (Online): 1432-1114
• Published Online: 31 August 2006
• Copyright Holders: Copyright © 2006 Springer Verla