IMECH-IR  > 流固耦合系统力学重点实验室
PARAMETRIZATION OF HIGH-SPEED TRAIN STREAMLINE SHAPE
Sun ZX(孙振旭); Zhang Y; Yang GW(杨国伟); Sun, ZX (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China.
Source PublicationPROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2017, VOL 1A
2017
Conference NameASME Fluids Engineering Division Summer Meeting
Conference DateJUL 30-AUG 03, 2017
Conference PlaceWaikoloa, HI
Abstract

In the past decade, the high speed trains (HSTs) in China have experienced a booming development, with the design of CRH380A as a predominant example. A series of brand new HSTs have been developed with high aerodynamic performance, which includes the running resistance, the lift of the trailing car, pressure waves when trains pass by each other, aerodynamic noise in the far field, etc. In order to design HSTs with better aerodynamic performance, it is necessary to perform aerodynamic shape optimization, especially to optimize the streamline shape of HSTs. Parametrization is the basis for the whole optimization process, since good parametrization approach not only affects the optimization strategy, but also determines the design space and optimization efficiency. In the present paper, a series of work related to the streamline shape parametrization performed by the author in recent years have been introduced. Four different parametrization approaches have been exhibited, which are Local Shape Function method (LSF) and Free-Foam Deformation method (FFD), Modified Vehicle Modeling Function method (MVMF), Class function/Shape function Transformation method (CST). These methods could be categorized into two kinds: shape disturbance approach (LSF and FFD) and shape description approach (MVMF and CST). Among these four methods, some are developed by the authors while some are locally modified so as to meet the parametrization of the streamline shape. The detailed process of these four approaches are exhibited in the present paper and the characteristics of these four approaches are compared.

KeywordMultiobjective Optimization Head
WOS IDWOS:000417223800048
Funding OrganizationThis work was supported by Advanced Rail Transportation Special Plan in National Key R&D Program of China under 2016YFB1200601-B13. And Computing Facility for Computational Mechanics Institute of Mechanics, Chinese Academy of Sciences is gratefully acknowledged.
ISBN978-0-7918-5804-2
Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72172
Collection流固耦合系统力学重点实验室
Corresponding AuthorSun, ZX (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China.
Affiliation[Sun, Zhenxu,Zhang, YeYang, Guowei] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Sun ZX,Zhang Y,Yang GW,et al. PARAMETRIZATION OF HIGH-SPEED TRAIN STREAMLINE SHAPE[C]. NEW YORK:AMER SOC MECHANICAL ENGINEERS,2017.
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