Abstract
To reduce the aerodynamic drag of a truck, two different passive drag reduction methods are investigated to a real truck. First, a simulation model of the truck is built. The external flow field of the truck is studied in details using CFD method. Then a fairwater is added on the top of truck’s head. The effects of different shrink angles of the fairwater on the flow flied and the aerodynamic drag are studied. It is found that the fairwaters can effective decrease the total drag. Then different sizes of cylinders are attached to the top and bottom edges of the tail. A detailed analysis of the flow field and the effect on drag are carried out. At last, these two methods are both applied to the truck and the value of the effective parameters is optimized. A maximum percentage of the drag reduction upped to 24.8% can be obtained.
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Yang, X., Ma, Z. (2014). Drag Reduction of a Truck Using Append Devices and Optimization. In: Li, K., Xiao, Z., Wang, Y., Du, J., Li, K. (eds) Parallel Computational Fluid Dynamics. ParCFD 2013. Communications in Computer and Information Science, vol 405. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-53962-6_29
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DOI: https://doi.org/10.1007/978-3-642-53962-6_29
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