摘要
为研究离心泵旋转过程中的空化特性,以实验室的小流量离心泵为基础建立三维模型,采用Rayleigh-Plesset空化模型和Transient Blade Row模型对离心泵进行瞬态空化计算,分析旋转角变化时其空化体积分数变化情况。结果表明,当旋转角度为8°左右时,空化体积分数最小,扬程最高;当旋转角度为40°左右时,空化体积分数最大,扬程最低;当旋转角度为120°左右时,叶片的载荷存在较大值。
In order to study the cavitation characteristics of centrifugal pump during rotation,taking one centrifugal pump with small flow in laboratory as a basis,the three-dimensional model is established.The Rayleigh-Plesset cavitation model and Transient Blade Row model are used for transient calculation of cavitation of centrifugal pump,and analyzing the cavitation volume fraction variation when the rotation angle changes.The results show that when the rotation angle is around 8 degrees,the cavitation volume fraction gets to a minimum,and the lift is highest;when the rotation angle is around 40 degrees,the cavitation volume fraction gets to a maximum,and the lift is the lowest;when the rotation angle is around 120 degrees,the load of the blade has a larger value.
作者
汪春节
刘聪
Wang Chunjie;Liu Cong(Gree Electric Appliances Inc.of Zhuhai;Xuhai College,China University of Mining and Technology)
出处
《制冷与空调》
2019年第1期23-26,共4页
Refrigeration and Air-Conditioning
关键词
离心泵
空化
旋转角
体积分数
centrifugal pump
cavitation
rotation angle
volume fraction
