本研究针对一款新型永磁磁力耦合器导风散热装置的导风散热片进行仿真分析。首先设计单因素实验，对其部分几何参数进行研究，利用Fluent软件进行流固耦合模拟，得出几何参数对最高温升及阻力距的影响关系，为正交实验提供合理的参数范围。然后设计正交实验，利用极差分析得出合理的参数组合。最后利用上文参数组合建模，模拟安装不同导风散热片个数的散热效果，寻找合适个数。并与未安装导风散热片的模型进行对比，得出此新型导风散热片设计合理，具有一定的实用价值。

This paper simulated a new ventilation cooling fin for a permanent magnet magnetic coupling.Firstly,the fin geometric parameters were investigated by using Fluent.The influences on the maximum temperature rise and resistance from the changes in geometric parameters were obtained,and used to determine reasonable parameters for the orthogonal experiment.The orthogonal experiment was then designed,and the combinations of parameters were obtained by using range analysis.Finally,all parameters obtained were considered and used to build models and design experiments through arranging different number of ventilation cooling fins for the effective cooling and identifying the optimal fin number.The cooling effectiveness was also compared to the case without ventilation cooling fin.It was concluded that the new ventilation cooling fin design is reasonable and of some practical value.

TK124

国家科技型中小企业创新基金项目（12C26214405347）；广东省自然科学基金（9152500002000003）；广东省教育厅科技创新项目（2012KJCX0076）