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Computational analysis of pressure and wake characteristics of an aerofoil in ground effect

Computational analysis of pressure and wake characteristics of an aerofoil in ground effect
Computational analysis of pressure and wake characteristics of an aerofoil in ground effect
The pressure and wake of an inverted cambered aerofoil in ground effect was studied numerically by solving the Reynolds-averaged Navier-Stokes equations. Efforts were focused on the setting up of an accurate numerical model and assessing the abilities of various turbulence models in capturing major physical features associated with the flow, such as surface pressure distribution, separation, level of downforce, and wake. A number of ride heights were studied covering various force regions. Surface pressures, sectional forces, and wake characteristics were compared to experimental data. The k–? SST and Realizable k–? turbulence models were found to offer good overall simulations, with the k–? SST performing better for the surface pressure and the Realizable k–? better for the wake. The simulations at various ride heights correctly captured the trends in flow-field variations with ride height. The surface pressures, wake flow field, and region of separation on the suction surface of the aerofoil, at lower ride heights, were all modeled accurately.
0098-2202
290-298
Mahon, Stephen
e7f67dd0-cfc7-4f08-98ab-a518c2548034
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Mahon, Stephen
e7f67dd0-cfc7-4f08-98ab-a518c2548034
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421

Mahon, Stephen and Zhang, Xin (2005) Computational analysis of pressure and wake characteristics of an aerofoil in ground effect. Journal of Fluids Engineering, 127 (2), 290-298. (doi:10.1115/1.1891152).

Record type: Article

Abstract

The pressure and wake of an inverted cambered aerofoil in ground effect was studied numerically by solving the Reynolds-averaged Navier-Stokes equations. Efforts were focused on the setting up of an accurate numerical model and assessing the abilities of various turbulence models in capturing major physical features associated with the flow, such as surface pressure distribution, separation, level of downforce, and wake. A number of ride heights were studied covering various force regions. Surface pressures, sectional forces, and wake characteristics were compared to experimental data. The k–? SST and Realizable k–? turbulence models were found to offer good overall simulations, with the k–? SST performing better for the surface pressure and the Realizable k–? better for the wake. The simulations at various ride heights correctly captured the trends in flow-field variations with ride height. The surface pressures, wake flow field, and region of separation on the suction surface of the aerofoil, at lower ride heights, were all modeled accurately.

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Published date: 2005

Identifiers

Local EPrints ID: 23506
URI: http://eprints.soton.ac.uk/id/eprint/23506
ISSN: 0098-2202
PURE UUID: 7b8a7824-6dc4-4436-a6ef-018d8feee33e

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Date deposited: 20 Mar 2006
Last modified: 15 Mar 2024 06:47

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Contributors

Author: Stephen Mahon
Author: Xin Zhang

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