When operating at high speed, the mechanical seal produces a large amount of frictional heat on the seal face. If the heat is not dissipated in time, it could lead to the thermal failure of the seal face. In the field of tribology research, the technology of textured surface is a method to enhance the heat dissipation rate. Numerical analysis is carried out based on the SST -ω turbulence model and the energy equation with viscous dissipation term, and the results are validated by the experimental data published in the reference. In a wide range of rotational speeds, cooling medium with varied Pr numbers is employed to confirm the performance of textured side-wall in heat transfer enhancement. The shape of the seal chamber is also changed to provide guidance for the design of the cooling channel. The results show that a larger Pr number increases the heat transfer enhancement of the textures; it is advisable to utilize a cooling channel that gradually decreases in size; and the flushing should not be perpendicular to the stator; additionally, it is important to ensure that the cooling channel is not too narrow. By means of appropriate design, the maximum temperature of seal face can be reduced by over 40 °C (22.2 %) at 20,000 rpm.

中文翻译：

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粘性耗散情况下冷却介质和冷却通道对织构密封传热的影响

机械密封在高速运转时，密封面上会产生大量的摩擦热。如果热量不及时散发，可能会导致密封面热失效。在摩擦学研究领域，纹理化表面技术是一种提高散热率的方法。基于SST-ω湍流模型和带有粘性耗散项的能量方程进行了数值分析，并通过参考文献中发表的实验数据验证了结果。在较宽的转速范围内，采用不同Pr值的冷却介质来验证织构侧壁的强化传热性能。密封室的形状也发生改变，为冷却通道的设计提供指导。结果表明，较大的Pr值会增加织构的传热强化；建议采用尺寸逐渐减小的冷却通道；冲洗不应垂直于定子；此外，确保冷却通道不要太窄也很重要。通过适当的设计，20000rpm时密封面最高温度可降低40℃以上（22.2%）。