| CFD Analysis of Structural Impact on Water Channel Cooling Efficiency in Electric Vehicle Motors |
| Hamidreza Rahimi1,2, Wang Xiang3,4, Chen Min5, Zhang Shunqi3, HongGuang Sun1, Hao Lin1 |
1State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
2Center for Landscape Regeneration, University of Cambridge, Cambridge, CB23QZ, UK
3School of Mechanical and Electrical Engineering and Automation, Shanghai University, Shanghai, 200444, China
4Shaoxing Research Institute of Shanghai University, Shaoxing, 312000, Zhejiang, China
5School of Advanced Technology, Xi’an Jiaotong - Liverpool University, Suzhou, 215123, Jiangsu, China |
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Received: March 27, 2024; Revised: January 6, 2025 Accepted: February 3, 2025. Published online: May 23, 2025. |
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| ABSTRACT |
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The primary performance criteria for the motor cooling system in electric vehicles are pressure loss and heat exchange efficiency. This research focuses on the performance of different designs is limited and the lack of a systematic design standard complicates the initial water channel design process. To address these challenges, two widely used designs of water channels (tiled and spiral channels) were selected for investigation. By using theoretical equations, a parameterization investigation has been conducted based on the water channel’s cycle number and section dimensions. The results indicated that the cycle number of channels has a more significant impact on thermal and hydraulic performance compared to the channel section dimensions. Additionally, pressure loss increases significantly for channel dimensions below a certain critical value and decreases as dimensions exceed this critical value; this value has been investigated in detail. Furthermore, computational fluid dynamics analysis using Ansys Fluent yielded results consistent with the theoretical method. |
| Key Words:
Motor in electric vehicles · Water channel design · Heat dispersion performance · Fluid analysis · Computational fluid dynamics |
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Corresponding Author.
Hamidreza Rahimi , Email. 
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