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Thermal analysis of ventilated brake disc based on heat transfer enhancement of heat pipe
International Journal of Thermal Sciences ( IF 4.9 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ijthermalsci.2020.106356
Qifei Jian , Li Wang , Yan Shui

Abstract Based on the thermal conduction and temperature uniformity of heat pipe and on the premise of ensuring the strength safety requirements of ventilated brake disc (VBD), transfer the heat of high temperature zone to low temperature zone timely by embedding heat pipes on the surfaces of VBD, and the heat transfer enhancement study of VBD during braking processes were developed. The brake bench test and numerical simulation analysis of heat pipe ventilated brake disc (HPVBD) and general ventilated brake disc (GVBD) under the condition of repeated fifteen braking and continuous downhill braking were carried out respectively. It is concluded that under experimental conditions, the maximum heat dissipation and the maximum temperature uniformity of VBD increased by 12.62% and 36.67% during repeated fifteen braking. The highest temperature decreased by 31 °C, and the temperature uniformity increased by 21.43% during continuous downhill braking; under simulation conditions, the maximum heat dissipation and the maximum temperature uniformity of VBD increased by 13.66% and 10.77% during repeated fifteen braking. The highest temperature decreased by 7 °C during continuous downhill braking; better heat transfer effects were achieved through inserting heat pipes on the surfaces of VBD under the two braking conditions.

中文翻译:

基于热管传热强化的通风制动盘热分析

摘要 基于热管的热传导和温度均匀性,在保证通风制动盘(VBD)强度安全要求的前提下,通过在制动盘表面埋设热管,将高温区的热量及时传递到低温区。开发了 VBD 和 VBD 在制动过程中的传热增强研究。分别对热管通风制动盘(HPVBD)和普通通风制动盘(GVBD)进行了反复十五次制动和连续下坡制动条件下的制动台架试验和数值模拟分析。得出的结论是,在实验条件下,反复十五次制动后,VBD的最大散热量和最大温度均匀性分别提高了12.62%和36.67%。最高温度下降31℃,连续下坡制动时温度均匀性提高21.43%;在仿真条件下,反复十五次制动,VBD的最大散热量和最大温度均匀性分别提高了13.66%和10.77%。连续下坡制动时最高温度下降7℃;在两种制动条件下,通过在VBD表面插入热管,获得更好的传热效果。
更新日期:2020-09-01
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