大型发电机定子径向通风沟流体流动特性研究  

Fluidity study of stator's radial cooling duct of large generator

作　　者：王海鹏[1] 丁树业[2] 张晓利 

机构地区：[1]哈尔滨大电机研究所,黑龙江哈尔滨150040 [2]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040 [3]哈尔滨热电厂,黑龙江哈尔滨150040

出　　处：《黑龙江电力》2009年第6期421-425,共5页Heilongjiang Electric Power

基　　金：国家自然基金资助项目(50576021)

摘　　要：大型发电机定子径向通风沟内流体流动形态是决定定子通风冷却效果的重要因素之一,对其进行研究具有一定的意义。从流体力学基本理论出发,确立了流体流动的微分方程,进而分别建立了通风沟内具有绕流性物体以及无绕流性物体的求解模型,并给出相应的求解条件,采用有限体积元法对通风沟内的流体场进行了数值求解,并且对通风沟内有无绕流性物体的流体流动特性进行了对比研究,明确了在两种不同流通结构下流体流动的特性区别,得出了一些有益的结论,为大型发电机定子传热特性的研究奠定理论基础。Flow patter of stator＇s radial cooling duct of large generator is an important element which determines stator＇s ventilation cooling. This paper, based on hydromechanics, establishes the differential equation of fluid flow, establishing solving models of the substance with flow and the one without flow in cooling duct respectively and of- feting solving conditions correspondingly, works out numerical solution to fluid field in cooling duct by finite volume element, compares fluidity of the substance with flow and the one without flow in cooling duct and defines the dis- tinction between fluidity under different flow structure. These conclusions lay the theoretic foundation for stator＇s heat transfer of large generator.

关 键 词：大型发电机 流体场 绕流流动 流动形态 

分 类 号：TM31[电气工程—电机]