Three-dimensional flow field simulation of steady flow in the serrated diffusers and nozzles of valveless micro-pumps

作     者：Ying-hua Xu Wei-ping Yan Kai-rong Qin Tun Cao 

作者机构：School of Energy and Power EngineeringDalian University of TechnologyDalian 116024China School of Optoelectronic Engineering and Instrumentation ScienceDalian University of TechnologyDalian 116024China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2019年第31卷第2期

页      面：413-420页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(Grant Nos.61376115 11672065) 

主　　题：Valveless micro-pump steady flow diffuser and nozzle serrated-sided wall three-dimensional flow field simulation 

摘      要：This paper presents a three-dimensional flow field simulation of the steady flows through diffusers and nozzles with straight or serrated-sided walls to analyze the effect of the channel structure on the flow *** pressure and velocity profiles in the diffusers and the nozzles as well as the net volumetric flow rate are *** simulation demonstrates that the pressure and velocity profiles in the serrated diffuser/nozzles are more complicated than those with the straight-sided wall,while the net steady flow rate with the straight-sided wall increases monotonically with the increase of the pressure difference,the steady flow rate with serrated sided walls increases gradually to reach a maximum and then decreases with the increase of the pressure *** results suggest that the number of the sawteeth plays a significant role in optimizing the design of serrated diffusers and nozzles for improving the transport efficiency of valveless micro-pumps.