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Aerodynamic shape optimization of a low drag fairing for small livestock trailers

Gilkeson, C.A., Toropov, V.V., Thompson, H.M., Wilson, M.C.T., Foxley, N.A. and Gaskell, P.H. (2008) Aerodynamic shape optimization of a low drag fairing for small livestock trailers. In: 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference. Proceedings. 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 10 - 12 September 2008, Victoria, British Columbia Canada. AIAA Conference Proceeding Series (AIAA 2008-5903). AIAA .

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Abstract

Small livestock trailers are commonly used to transport animals from farms to market within the United Kingdom. Due to the bluff nature of these vehicles there is great potential for reducing drag with a simple add-on fairing. This paper explores the feasibility of combining high-fidelity aerodynamic analysis, accurate metamodeling, and efficient optimization techniques to find an optimum fairing geometry which reduces drag, without significantly impairing internal ventilation. Airflow simulations were carried out using Computational Fluid Dynamics (CFD) to assess the performance of each fairing based on three design variables. A Moving Least Squares (MLS) metamodel was built on a fifty-point Optimal Latin Hypercube (OLH) Design of Experiments (DoE), where each point represented a different geometry configuration. Traditional optimization techniques were employed on the metamodel until an optimum geometrical configuration was found. This optimum design was tested using CFD and it matched closely to the metamodel prediction. Further, the drag reduction was measured at 14.4% on the trailer and 6.6% for the combined truck and trailer.

Item Type: Proceedings Paper
Copyright, Publisher and Additional Information: Reprinted with permission of the American Institute of Aeronautics and Astronautics, Inc. http://www.aiaa.org/content.cfm?pageid=2
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Computing (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User: Mrs Fiona Slade
Date Deposited: 07 Jan 2009 12:12
Last Modified: 08 Feb 2013 17:05
Published Version: http://www.aiaa.org/agenda.cfm?lumeetingid=1876&fo...
Status: Published
Publisher: AIAA
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/5226

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