Rotor wake interactions with an obstacle on the ground

Pickles, D.J., Green, R.B. and Giuni, M. (2018) Rotor wake interactions with an obstacle on the ground. Aeronautical Journal, 122(1251), pp. 798-820. (doi:10.1017/aer.2018.7)

Pickles, D.J., Green, R.B. and Giuni, M. (2018) Rotor wake interactions with an obstacle on the ground. Aeronautical Journal, 122(1251), pp. 798-820. (doi:10.1017/aer.2018.7)

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Abstract

An investigation of the flow around an obstacle positioned within the wake of a rotor is described. A flow visualisation survey was performed using a smoke wand and particle image velocimetry, and surface pressure measurements on the obstacle were taken. The flow patterns were strongly dependent upon the rotor height above the ground and obstacle, and the relative position of the obstacle and rotor axis. High positive and suction pressures were measured on the obstacle surfaces, and these were unsteady in response to the passage of the vortex driven rotor wake over the surfaces. Integrated surface forces are of the order of the rotor thrust, and unsteady pressure information shows local unsteady loading of the same order as the mean loading. Rotor blade-tip vortex trajectories are responsible for the generation of these forces.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Pickles, David and Green, Dr Richard and Giuni, Dr Michea
Authors: Pickles, D.J., Green, R.B., and Giuni, M.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Aeronautical Journal
Publisher:Cambridge University Press
ISSN:0001-9240
ISSN (Online):2059-6464
Published Online:06 March 2018
Copyright Holders:Copyright © 2018 Royal Aeronautical Society
First Published:First published in Aeronautical Journal 122(1251):798-820
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
647261National Wind Tunnel FacilityFrank CotonEngineering and Physical Sciences Research Council (EPSRC)EP/L024888/1VPO (ACADEMIC & EDUCATIONAL INNOVATION)