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Numerical simulation on flow field of motor annular water jacket and its cooling performance optimization

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Abstract

Aiming at improving the cooling of motor annular water jacket, the effects of different water jacket designs and pump rotation speed and epoxy resin filling on the flow field characteristics and motor temperature distribution were studied. Results show that uneven flow distribution leads to high temperature of motor coil and large temperature gradient. The optimized water jacket has better flow, uniform flow distribution of long and short paths, higher utilization rate of coolant, and the coil temperature is 2 °C lower than that of original model. On the basis of optimized water jacket, when epoxy resin filling methodology and pump rotation speed increased to 5000 r/min are applied, the coil temperature can be reduced by 16 °C compared with the original model. From the cooling performance optimization results in current case, the improvement order from the smallest to the biggest is the optimization of motor water jacket flow field, optimization of motor water jacket system flow rate, and the epoxy resin filling. To meet the cooling demands of motor, the comprehensive effects from the aspects of reducing coolant system resistance, increasing pump speed, epoxy resin filling and other effective technologies are ought to be considered for all case studies.

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Acknowledgments

This work was funded by the National Natural Science Foundation of China (Grants No. 51876109), Key project of International Science and Technology Cooperation Program for Shaanxi Province (Grants No.2020KWZ-015).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an, Shaanxi, China

    Libin Tan & Yuejin Yuan

  2. Loncin Motor Co. Ltd., JiuLongpo District, Chongqing, China

    Libin Tan

Authors
  1. Libin Tan
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  2. Yuejin Yuan
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Correspondence to Libin Tan.

Additional information

Libin Tan is a Ph.D. candidate in the College of Mechanical and Electrical Engineering at Shaanxi University of Science and Technology, Shaanxi Province. He is specialized in CFD simulations and doing his research in the field of heat transfer and thermal engineering in industrial applications, heat and mass transfer in food drying process and processing technology.

Yuejin Yuan is a Professor in the College of Mechanical and Electrical Engineering at Shaanxi University of Science and Technology, Shaanxi Province. He received his Ph.D. degree in China Agricultural University. He is specialized in CFD and doing research on heat transfer and thermal engineering in the field of engineering, food drying, and biomass burning.

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Tan, L., Yuan, Y. Numerical simulation on flow field of motor annular water jacket and its cooling performance optimization. J Mech Sci Technol 37, 4339–4348 (2023). https://doi.org/10.1007/s12206-023-0749-2

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  • DOI: https://doi.org/10.1007/s12206-023-0749-2

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