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Aerodynamic CFD Based Optimization of Police Car Using Bezier Curves

Journal Article
2017-01-9450
ISSN: 1946-3979, e-ISSN: 1946-3987
DOI: https://doi.org/10.4271/2017-01-9450
Published April 11, 2017 by SAE International in United States
Aerodynamic CFD Based Optimization of Police Car Using Bezier Curves
Sector:
Citation: Taherkhani, A., Gilkeson PhD, C., Gaskell PhD, P., Hewson PhD, R. et al., "Aerodynamic CFD Based Optimization of Police Car Using Bezier Curves," SAE Int. J. Mater. Manf. 10(2):85-93, 2017, https://doi.org/10.4271/2017-01-9450. Erratum published in SAE Int. J. Mater. Manf. 11(2):161, 2018, https://doi.org/10.4271/2017-01-9450.01. Erratum published in SAE Int. J. Mater. Manf. 11(2):161, 2018, https://doi.org/10.4271/2017-01-9450.01.
Language: English

Abstract:

This paper investigates the optimization of the aerodynamic design of a police car, BMW 5-series which is popular police force across the UK. A Bezier curve fitting approach is proposed as a tool to improve the existing design of the warning light cluster in order to reduce drag. A formal optimization technique based on Computational Fluid Dynamics (CFD) and moving least squares (MLS) is used to determine the control points for the approximated curve to cover the light-bar and streamline the shape of the roof. The results clearly show that improving the aerodynamic design of the roofs will offer an important opportunity for reducing the fuel consumption and emissions for police vehicles. The optimized police car has 30% less drag than the non-optimized counter-part.

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