Valve-less Micropump Numerical Simulation and Efficiency Analysis
Date Issued
2005
Date
2005
Author(s)
Zeng, Yu-Bo
DOI
zh-TW
Abstract
The objective of study is to investigate valve-less micropump by CFD software Fluent.Simulating valve-less micropump has to use moving boundary condition, so the mesh has to use the dynamic mesh system.This text will prove the feasibility of dynamic mesh,and find out simplified boundary condition for avoiding the complicated dynamic mesh system.This article supposes that the importing and exporting velocity will be changed of trigonometric function sine with time, and then derives out integral formula of the flow rate per period.The integral formula can be simplified to diffuser efficiency formula by getting efficiency of diffuser .This article will prove the accuracy of diffuser efficiency formula in different Reynolds number, and compare the efficiency of diffuser for different Reynolds nurmber and diffuser angles in trainsient and steady process.This investigation will be very helpful for the design of micropump system.
Subjects
無閥式微型幫浦
漸擴管(漸擴元件)效率
漸擴管(漸擴元件)壓力損失係數
移動邊界
動態網格
暫態流場
valve-less micropump
diffuser efficiency
diffuser pressure loss coefficient
moving boundary
dynamic mesh
transient flow field
Type
thesis
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