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CFD-Based Modelling of the Variation of Aerodynamic Coefficients with Wind Angle

Malviya, Vihar, Mishra, Rakesh and Gundala, Naresh (2009) CFD-Based Modelling of the Variation of Aerodynamic Coefficients with Wind Angle. In: Proceeding of National Conference on Fluid Mechanics & Fluid Power 17-19 December 2009. College of Engineering Pune, Pune, India.

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Abstract

This paper presents CFD-based investigation to develop a deterministic relation between the aerodynamic coefficients and the relative angle of attack of the flow. A mathematical model has been developed to predict the aerodynamic coefficients, which allows accurate quantification of aerodynamic forces and moments for a large variety of ground vehicles in all types of side wind conditions. The vehicle type has been generalised on the basis of primary dimensional parameters of vehicle length, width and height. CFD simulations have been carried on a double deck bus model at wind speed of 25 m/s (90 km/hour, 56 mile/hour), for wind angles ranging from 0º (head wind) to 90º. These computational results have been used for developing systematic equations to quantify aerodynamic coefficients. Conclusions have been based on the requirement of this model in a larger overall stability model for ground vehicles which considers other non-aerodynamic sources of vehicle instability as well. The mathematical relation for aerodynamic coefficients developed herein can be used for numerous other aerodynamic and fluid dynamic investigations that involve large angles of attack.

Item Type: Book Chapter
Additional Information: Paper No:69-CFD-6
Uncontrolled Keywords: Aerodynamics, analytical model, coefficient, flow angle, CFD
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Schools: School of Computing and Engineering
School of Computing and Engineering > Automotive Engineering Research Group
School of Computing and Engineering > Pedagogical Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre
School of Computing and Engineering > Diagnostic Engineering Research Centre > Energy, Emissions and the Environment Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre > Machinery Condition and Performance Monitoring Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre > Measurement System and Signal Processing Research Group
School of Computing and Engineering > High-Performance Intelligent Computing
School of Computing and Engineering > High-Performance Intelligent Computing > Information and Systems Engineering Group
School of Computing and Engineering > High-Performance Intelligent Computing > High Performance Computing Research Group
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Depositing User: Vihar Malviya
Date Deposited: 22 Apr 2010 11:18
Last Modified: 16 Dec 2010 09:57
URI: http://eprints.hud.ac.uk/id/eprint/7465

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