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To address the heat dissipation issue of hub motor in a specialized vehicle, a serpentine flow channel was chosen as the cooling structure. CFD simulations were performed to analyze the temperature rise, temperature distribution, and radial temperature variation of the hub motor. Subsequently, the effects of the number and width of flow channels on the motor's temperature and flow fields were investigated. The appropriate number of flow channels was determined and an initial selection of channel width was decided. Furthermore, taking the flow channel height and width as optimization variables, a multi-objective optimization was conducted, with the maximum motor temperature and flow channel pressure drop as the optimization targets. The results show that after optimization, the highest motor temperature increased by 0.22℃, while the flow channel pressure drop decreased by 904.19 Pa, effectively reducing energy loss and improving the heat dissipation efficiency of the cooling system.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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