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Structural dynamics-CFD interaction for computation of vertical tail buffet

Published online by Cambridge University Press:  04 July 2016

O. A. Kandil ,
S. J. Massey  and
E. F. Sheta
O. A. Kandil
Affiliation:
Aerospace Engineering DepartmentOld Dominion University, Norfolk, USA
S. J. Massey
Affiliation:
Aerospace Engineering DepartmentOld Dominion University, Norfolk, USA
E. F. Sheta
Affiliation:
Aerospace Engineering DepartmentOld Dominion University, Norfolk, USA
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Abstract

The multidisciplinary problem of tail buffeting is solved using three sets of equations. The first set is the unsteady, compressible, full Navier-Stokes equations which are used for obtaining the flowfield vector and the aerodynamic loads. The second set is the coupled aeroelastic equations which are used for obtaining the bending and torsional deflections of the tail. The third set is the grid-displacement equations which are used for updating the grid coordinates due to the tail deflections. For the computational applications, a sharp-edged delta wing of aspect ratio one and a rectangular vertical tail of aspect ratio one placed in the plane of geometric symmetry behind the wing are considered. The configuration is pitched at a critical angle of attack (α = 38°) which produces asymmetric, vortex-breakdown flow from the delta wing primary vortices. The results show the effects of coupled and uncoupled bending-torsional responses and the effects of Reynolds number.

Type
Research Article
Information
The Aeronautical Journal , Volume 100 , Issue 997 , September 1996 , pp. 297 - 304
Copyright
Copyright © Royal Aeronautical Society 1996 

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