In order to analyze the rationality of the temperature distribution of the coach in the sleeping electric multiple units(EMU), a numerical calculation model is established to calculate the temperature field of the coach based on CFD theory. According to the results, four optimization schemes are presented for the air inlet structure of the compartment in the air supply duct. One is to increase the air inlet area of the compartment, the second is to install a baffle at the inlet, and the third is to set a drainage channel at the inlet of drainage channel, and the last one is to combine the second one and the third one. Then the simulation analysis of each optimization scheme is carried out. The result shows that the air flow of the compartment close to the air supply duct of the original model is obviously less than that of other compartments, which leads to the higher temperature in this compartment in summer and lower temperature in winter than the others. The first scheme is not as effective as the second and the third ways in increasing the air flow of the compartment. In addition, the fourth scheme can effectively increase the air flow of the compartment and improve the uniformity of the temperature field. Through the comprehensive comparison, the fourth optimization scheme is better.
MENG Tian
,
ZHANG Jiye
,
LI Tian
. Numerical Simulation and Optimization for the Temperature Field of the Coach in the Sleeping EMU[J]. Journal of Mechanical Engineering, 2018
, 54(12)
: 17
-22
.
DOI: 10.3901/JME.2018.12.017
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