Allan, M.R. (2001) Euler Simulations of Pitching Delta Wing Aerodynamics within Wind Tunnel Constraints. Dept of Engineering technical report 0114. Technical Report. Department of Aerospace Engineering, University of Glasgow.
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Abstract
Euler simulations of a pitching delta wing within three wind tunnels (Square, 3x2, and 2x3 tunnels) have been performed. The solutions have been validated by comparing a farfield solution with experimental data. The steady solutions have shown that the presence of the wind tunnels promotes vortex breakdown, and that the side walls are the most influential. The presence of the side walls increases the suction on the surface of the wing, and shifts the vortex core inboards and upwards. The roof and floor have a lesser influence as was demonstrated by bringing the roof and floor closer to the wing surface (changing from the square tunnel to the 3x2 tunnel). It was concluded that the main effect causing the shift towards the apex of the breakdown location was an increase in the mean incidence of the wing. As with the steady solutions, the unsteady solutions have shown that the 2x3 tunnel varies the breakdown locations the most, in comparison to those from the farfield solution. The greatest divergence of the breakdown locations from those of the farfield solution occurs on the downstroke of the motion. This is due to the fact that the wing leaves a state of high tunnel interference going to a state of lower interference.
Item Type: | Research Reports or Papers (Technical Report) |
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Additional Information: | University of Glasgow author: M.R. Allan |
Status: | Published |
Glasgow Author(s) Enlighten ID: | UNSPECIFIED |
Authors: | Allan, M.R. |
College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
Publisher: | Department of Aerospace Engineering, University of Glasgow |
Copyright Holders: | Copyright © 2001 Department of Aerospace Engineering, University of Glasgow |
Publisher Policy: | Reproduced with the permission of the Department |
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