为了研究分布式拉杆转子在不同拉杆预紧力和轮盘表面粗糙度影响下轮盘结合面接触传热特性，建立了分布式拉杆转子轮盘结合面接触热阻分形模型，对拉杆转子进行了热力学计算。设计搭建拉杆转子轮盘结合面接触传热特性试验台，测量了拉杆转子温度场随拉杆预紧力和轮盘表面粗糙度的变化。结果表明：结合面接触传热系数随着拉杆预紧力增大而增大，随着轮盘表面粗糙度的增大而减小，并验证了结合面接触热阻分形模型适用于分布式拉杆转子轮盘结合面接触传热特性分析。

In order to study the contact heat transfer characteristics on the joint interface of the distributed rod fastening rotor under the influence of different pull rod pretension and the surface roughness of different wheel disk,the thermal contact resistance fractal model on the joint interface of the distributed rod fastening rotor is established,and the thermodynamic calculation of the rod fastening rotor is carried out.A contact heat transfer characteristic test rig for the joint interface of the distributed rod fastening rotor is designed and built.The temperature field of the rod rotor is measured by varying the tension force of the pull rod and the surface roughness of the wheel.The results show that the heat transfer coefficient of the joint interface increases with the increase of the pretension of the rod,and decreases with the increase of the surface roughness of the wheel.The thermal contact resistance fractal model of the joint interface is verified,and it is proved that it is suitable for the study of the thermal contact resistance on joint interfaces of distributed rod fastening rotor.

TK47，TK311

国家自然科学基金（51475311）