超薄离心式微泵的水力设计及优化  

The Hydraulic Design and Optimization for Ultra-thin Centrifugal Micropump

作　　者：廖唯唯 吴睿康 范义文 胡润[1] 罗小兵[1] LIAO Wei-Wei;WU Rui-Kang;FAN YI-Wen;HU Run;LUO XIAO-Bing(HuaZhong University of Science and Technology,Energy and Power Engineering Department,Wuhan 430074,China)

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《工程热物理学报》2021年第5期1251-1256,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51625601,No.51576078,No.51606074)。

摘　　要：超薄离心式微泵,作为便携电子设备中的液冷散热系统的关键部件,它的水力部件的尺寸受到严格限制,结构特性导致轮毂比很大,而且小流量大扬程的技术要求导致整机的比转速极低。运用传统的设计方法很难设计出高效并且性能优异的水力模型。本文采用速度系数法和CFD水力仿真技术相结合的方法,探究了叶片长度,叶片出口宽度,叶片数等参数对于微泵水力性能的影响。最后得到一个优化的超薄离心式微型泵的水力模型。Ultra-thin centrifugal micropump,functioned as the key part of the liquid cooling system in the portable electronic devices,whose dimensions are under strict limitations.Its structural characteristic leads to large hub ratio,what’s more,the technology requirements(small flow rate and high head)makes its specific speed extremely low.So the traditional hydraulic design methodology is no longer suitable for the kind of micropump.Herein,we adopt a new method to combine the traditional speed coefficient method and the modern CFD simulation method,exploring some parameters’influence on the performance of the micropump,such as the blade length,the blade number,and the diameter of the basic circle of the volute and the blade outlet thickness.Finally,we get a modified and satisfying hydraulic model of the micropump.

关 键 词：大轮毂比 超低比转速 离心泵 CFD仿真 

分 类 号：TK72[动力工程及工程热物理—流体机械及工程]