A surrogate model based aerodynamic shape optimization method applied to the wind deflector of a tractor-trailer in crosswind is presented in this paper. The aerodynamic drag coefficient and handling stability of the tractor-trailer subjected to crosswinds is analyzed. The numerical results show that the wind deflector can influence drag coefficient and the lateral displacement of the tractor-trailer in crosswinds in great degree. Four parameters are used to describe the wind deflector geometry: Width, Length, Height and Angle. A 30-level design of experiments (DOE) study using the optimal Latin hypercube method is conducted to analyze the sensitivity of the design variables and build a database to set up the surrogate model. The surrogate model is constructed based on the Kriging interpolation technique. The fitting precision of the surrogate model is examined using a computational fluid dynamics (CFD) and multi-body dynamics and certified using a surrogate model simulation. Finally, multi-island genetic algorithm is used to optimize the shape of the wind deflector based on the surrogate model. The maximum tolerance between the results of the CFD and multi-body dynamics simulation and the surrogate model is only 2.02 %. When using the optimal design variables, the aerodynamics drag coefficient decreases maximum by 6.23 % and the lateral displacement decreases maximum by 4.67 %.


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    Titel :

    Surrogate Model for Aerodynamic and Handling Stability Optimization of a Tractor-Trailer in Crosswinds


    Weitere Titelangaben:

    Lect. Notes Electrical Eng.


    Beteiligte:
    Gong, Xu (Autor:in) / Gu, Zhengqi (Autor:in) / Ye, Jian (Autor:in) / Yan, Xu (Autor:in) / Zhao, Zhiming (Autor:in)


    Erscheinungsdatum :

    2012-11-15


    Format / Umfang :

    12 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Surrogate Model for Aerodynamic and Handling Stability Optimization of a Tractor-Trailer in Crosswinds

    Gong, X. / Gu, Z. / Ye, J. et al. | British Library Conference Proceedings | 2013


    Surrogate Model for Aerodynamic and Handling Stability Optimization of a Tractor-Trailer in Crosswinds

    Gong, X. / Gu, Z. / Ye, J. et al. | British Library Conference Proceedings | 2013