迷宫式汽封流体动力特性研究  

Research on Flow Field Dynamic Characteristics in a Labyrinth Seal

作　　者：马浩原[1] 张万福[1,2] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海理工大学能源与动力工程学院上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《动力工程学报》2017年第1期21-25,共5页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(11402148)

摘　　要：建立了迷宫式汽封的全三维模型,采用CFD商业软件Fluent对不同工况下汽封的流场进行了计算分析,研究了转子所受的气流力与转速、进出口压力比及偏心率的关系,得到了影响转子稳定性的密封动力特性系数和涡动系数.结果表明:随着转速、进出口压力比和偏心率的增大,涡动系数也相应增大,转子的稳定性下降.A full three-dimensional model was set up for a labyrinth seal, in which the flow field was calcu- lated and analyzed under different working conditions using commercial CFD software Fluent, so as to study the relations of the fluid-induced force with the rotational speed, pressure ratio and the eccentricity, etc. , and to obtain the dynamic coefficient and whirl coefficient of the seal that may influence the stability of the rotor. Results show that with the rise of rotational speed, pressure ratio and eccentricity, the whirl coefficient increases accordingly, and the stability of the rotor is hence reduced.

关 键 词：迷宫式汽封 气流力 动力特性 数值计算 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]