电机内自力风扇性构件诱发的流型演变及热交换机理研究

项目名称： 电机内自力风扇性构件诱发的流型演变及热交换机理研究

项目编号： No.51277045

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 丁树业

作者单位： 哈尔滨理工大学

项目金额： 86万元

中文摘要： 径向通风槽钢性能与电机内流体流动及温度分布密切相关，建立考虑径向通风槽钢动态效应的电机发热冷却理论模型、进行关键问题研究已成为电机研究领域迫切需要。本研究利用瞬态流体力学控制方程、暂态传热学、有限体积元法及动态信号测试技术，首次尝试对电机内自力风扇特性构件所诱发的流场流型演变机理及温度分布性能进行综合研究，由此阐明电机内旋转流产生、演变的界定条件以及温度分布规律，揭示槽钢结构、数量、位置、流体特性以及热参量等多因素影响规律的内在机理。建立三维非定常紊流流场及流体与温度耦合求解模型，对通风模型以及实验电机的流、热进行精确数值求解，通过数值仿真与实验数据的对比分析，指出电机内流体场流变特性及温度分布规律，同时明确定转子径向通风槽钢多种性能因素作用对电机发热与冷却性能的影响。本研究拟探索出径向通风电机冷却性能优化方法，制定研制电机新型通风方式的技术途径，实现电机转子两端风扇结构上的"摘除"。

中文关键词： 自力风扇；流型演变；特性分析；结构优化；通风方式

英文摘要： There is a cloes correlation between the performance of radial ventilaton channel steel and fuid flow and temperature distribution, it has become urgent needs to establish machine heat and cooling theory model take into account dynamic effect of radial ventilation channel steel and investigate significant problem in machine research field. In order to clarify the generation of rotation flow, demarcation condition and distribution discipline of temperature parameters inside machine and reveal internal mechanism of multi-factors influence discipline such as structure, number, position of ventilation channel steel, fluid characteristic and thermal parameter, this is the first attempt to research the flow pattern evolution mechanism and temperarue distribution characteristics induced by the component which has the characteristic of self-support fan using transient fluid mechanical governing equations, transient heat transfer theory, volume finite method and dynamic signal measuring technique. Three dimensional model of unsteady turbulent fluid field and fluid temperature coupling are established, fluid and thermal of ventilation model and testing machine are numerical solved accurately, fluid flow performance and temperature distribution discipline of machine cleared through comparing numerical simulation and measur

英文关键词： self-support fan；flow pattern evolution；characteristic analysis；structure optimization；ventilation method