摘要
根据流体力学理论,建立了定子径向通风沟内流体运动微分方程,给出了二维流体场的求解域和边界条件并且进行了计算和分析,对入口风速不同时径向通风沟内流场的分布进行了比较。同时在流体场计算的基础上计算了径向通风沟内各风壁的散热系数,建立了定子三维温度场的数学模型和物理模型,对定子三维温度场进行了计算,将考虑流场具体分布时的计算结果与传统的温度场计算结果及解析法计算的结果和实测值进行比较,得出了一些有益的结论,说明了该方法的准确性。
According to the theory of fluid dynamics, presented the fluid movement differential equation inside stator radial ventilation ducts, the solution region and the edge conditions of 2D fluid fields are given, and the fluid field is calculated and analysed, fluid field distribution inside radial ventilation ducts were compared at the different inlet velocity. At the same time, the heat transfer coefficient inside radial ventilation ducts were calculated on the basis of computational fluid dynamics (CFD), established mathematical model and physical model of stator 3D temperature fields, the stator 3D temperature field is computed and compared the result of it with the result calculated by tradition method, and measured value, some useful conclusions were achieved, and testified the accuracy of this method.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第13期129-134,共6页
Proceedings of the CSEE
基金
黑龙江省自然科学基金项目(E00-14)。
关键词
电机
大型同步发电机
径向通风沟
流体场
温度场
Electric machinery
Large synchronous generator
Radial ventilation duct
Fluid field
Temperature filed
