摘要
采用合理的计算模型对大型空冷汽轮发电机通风结构中气体运动流场进行数值模拟是保证数值计算结果是否正确的关键。本文综合考虑定子、转子的作用,将整个空冷汽轮发电机作为整体,以风扇为进口边界条件,定子风道压力出口为出口边界条件,计算通风系统中气体的运动速度。数值模拟结果能较好地符合实际。
Rational modeling of air movement in ventilation ducts of large air-cooled turbogenerator is the crucial factor for correct numerical calculation. Considering the whole generator including stator and rotor, taking the fan as inlet boundary condition and stator ventilation ducts as outlet boundary condition, this paper calculated the gas movement speed in the ventilation system. Results of numerical calculation were proved to be consistent with practice.
出处
《大电机技术》
北大核心
2005年第6期8-10,共3页
Large Electric Machine and Hydraulic Turbine
关键词
数值模拟
风扇特性
定子
转子
numerical simulation
fan characteristic
stator
rotor
