Computational study of wing in ground effect flows
Computational study of wing in ground effect flows
The performance of an aerofoil in ground effect has been studied using two computational packages, CFL3D and Fluent. Using these packages, the k- & , k-w, Shear Stress Transport and the Spalart-Allmaras model {17] were applied to the problem. Grid dependency was tested and the results were compared to experimental data. It was found that C-type grids performed best but caused problems in fully structured grids due to grid stretching issues. The level of grid sensitivity was investigated for all turbulence models over a range of ride heights. The Shear Stress Transport and Spalart-Allmaras models performed the best with the other two models providing poor accuracy. It is shown also that a compressible flow solver does not predict incompressible flow problems well, although some fixes can be implemented with a large time penalty. A two-dimensional computational database of wing in ground effect flows incorporating the aerofoil has been developed. This will be vital to produce further work, which will be greatly assisted by the inclusion of the Detached Eddy Simulation model in Fluent.
University of Southampton
O'Donnell, Liam Paul
5a235929-b657-4260-bedb-533a821965ca
2004
O'Donnell, Liam Paul
5a235929-b657-4260-bedb-533a821965ca
O'Donnell, Liam Paul
(2004)
Computational study of wing in ground effect flows.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The performance of an aerofoil in ground effect has been studied using two computational packages, CFL3D and Fluent. Using these packages, the k- & , k-w, Shear Stress Transport and the Spalart-Allmaras model {17] were applied to the problem. Grid dependency was tested and the results were compared to experimental data. It was found that C-type grids performed best but caused problems in fully structured grids due to grid stretching issues. The level of grid sensitivity was investigated for all turbulence models over a range of ride heights. The Shear Stress Transport and Spalart-Allmaras models performed the best with the other two models providing poor accuracy. It is shown also that a compressible flow solver does not predict incompressible flow problems well, although some fixes can be implemented with a large time penalty. A two-dimensional computational database of wing in ground effect flows incorporating the aerofoil has been developed. This will be vital to produce further work, which will be greatly assisted by the inclusion of the Detached Eddy Simulation model in Fluent.
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Published date: 2004
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Local EPrints ID: 465733
URI: http://eprints.soton.ac.uk/id/eprint/465733
PURE UUID: 4c2ee3a2-08dc-4c77-abab-7ad162491c6b
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Date deposited: 05 Jul 2022 02:48
Last modified: 16 Mar 2024 20:20
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Author:
Liam Paul O'Donnell
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