Effects of cross wind on sport utility vehicles (SUV): A Computational study

Jiannan Tan, Zixi Chen, Yingying Hu, Sivapathasund Parameswaran, Sdaek Rahman, Mark Gleason, Richard Sun

Research output: Contribution to conferencePaperpeer-review


The cross-wind effect has direct influence on the performance of ground vehicle and is hence of interest to vehicle designers. Although wind tunnel experiment is still the most reliable and irreplaceable method for vehicle aerodynamics research, CFD is widely accepted as a flexible and cost-efficient supplement to the traditional wind tunnel test. In this paper, a CFD study is conducted to investigate the aerodynamic influence of cross-wind on a commercial SUV which is a 1:1 real-size CAD model obtained from the manufacturer. Four wind tunnel models of different dimensions are utilized. Several wind angles of attack (yaw angle) are applied for each model. Coefficients of drag, lift and side forces are calculated for each yaw angle. Wall boundary effect is discussed. For validation purpose, results from CFD simulation are compared with available experimental data and good quantitative agreement was observed. The validated computational tool can now be successfully applied to study the
Original languageEnglish
StatePublished - May 27 2010


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