吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 108-113.

• paper • Previous Articles     Next Articles

Aerodynamic drag reduction of van based on underbody skirt

HU Xing-jun, YANG Bo, GUO Peng, WANG Jing-yu, YANG Yang, AN Yang   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
  • Received:2010-09-25 Online:2011-09-30 Published:2011-09-30

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Abstract:

The principles and method of computational fluid dynamics were applied to numerical simulate the external flow field about the simplified geometrical model of a made-in-china van.The hybrid mesh of tetrahedral,triangular prismatic,pyramidal and hexahedral elements as well as the turbulence model of Realizable k-ε was adopted to study the flow field of trucks with 4 styles,9 kinds of underbody skirt and no skirt.The aerodynamic characteristics of all the models were calculated and postprocessed including aerodynamic drag coefficients,surface pressure,streamlines and velocity vectors.The flow characteristics and aerodynamic drag coefficients were compared and analyzed among the different models with and without underbody skirt.The results show that the aerodynamic characteristics will be improved and the drag coefficients will be reduced when adding underbody skirts.

Key words: aerodynamics, underbody skirt, truck, aerodynamic drag reduction, numerical simulation

CLC Number: 

  • U461.1


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