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CLC number: TK414.2+12; O357.5

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Received: 2008-03-26

Revision Accepted: 2008-05-22

Crosschecked: 0000-00-00

Cited: 3

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.9 P.1270-1276

http://doi.org/10.1631/jzus.A0820223


Numerical simulation and optimization design of the EGR cooler in vehicle


Author(s):  Yu-qi HUANG, Xiao-li YU, Guo-dong LU

Affiliation(s):  Power Machinery and Vehicular Engineering Institute, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   huangyuqi@zju.edu.cn, yuxl@zju.edu.cn

Key Words:  Exhaust gas recirculation (EGR) cooler, Computational fluid dynamics (CFD), Shell-and-tube heat exchanger, Helical baffle


Yu-qi HUANG, Xiao-li YU, Guo-dong LU. Numerical simulation and optimization design of the EGR cooler in vehicle[J]. Journal of Zhejiang University Science A, 2008, 9(9): 1270-1276.

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%A Guo-dong LU
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PB - Zhejiang University Press & Springer
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Abstract: 
The EGR (exhaust gas recirculation) technique can greatly reduce the NOx emission of diesel engines, especially when an EGR cooler is employed. Numerical simulations are applied to study the flow field and temperature distributions inside the EGR cooler. Three different models of EGR cooler are investigated, among which model A is a traditional one, and models B and C are improved by adding a helical baffle in the cooling area. In models B and C the entry directions of cooling water are different, which mostly influences the flow resistance. The results show that the improved structures not only lengthen the flow path of the cooling water, but also enhance the heat exchange rate between the cool and hot media. In conclusion we suggest that the improved structures are more powerful than the traditional one.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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