IMECH-IR  > 流固耦合系统力学重点实验室
Three-dimensional aerodynamic optimization design of high-speed train nose based on GA-GRNN
Yao SB(姚拴宝); Guo DL(郭迪龙); Yang GW(杨国伟)
Source PublicationScience China Technological Sciences
2012
Issue5
ISSN1674-7321
Abstract

With the speed upgrade of the high-speed train, the aerodynamic drag becomes one of the key factors to restrain the train speed and energy saving. In order to reduce the aerodynamic drag of train head, a new parametric approach called local shape function (LSF) was adopted based on the free form surface deformation (FFD) method and a new efficient optimization method based on the response surface method (RSM) of GA-GRNN. The optimization results show that the parametric method can control the large deformation with a few design parameters, and can ensure the deformation zones smoothness and smooth transition of different deformation regions. With the same sample points for training, GA-GRNN performs better than GRNN to get the global optimal solution. As an example, the aerodynamic drag for a simplified shape with head + one carriage + tail train is reduced by 8.7%. The proposed optimization method is efficient for the engineering design of high-speed train.

KeywordAerodynamic Drag
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000310031400016
DepartmentLMFS流固耦合与数值计算(LHO)
Classification二类/Q3
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45662
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Yao SB,Guo DL,Yang GW. Three-dimensional aerodynamic optimization design of high-speed train nose based on GA-GRNN[J]. Science China Technological Sciences,2012(5)
APA Yao SB,Guo DL,&Yang GW.(2012).Three-dimensional aerodynamic optimization design of high-speed train nose based on GA-GRNN.Science China Technological Sciences(5).
MLA Yao SB,et al."Three-dimensional aerodynamic optimization design of high-speed train nose based on GA-GRNN".Science China Technological Sciences .5(2012).
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