New pumping mechanism by surface waves in a microchannel

Tzong Shyng Leu, Homg Jiann Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper investigates new pumping phenomena induced by surface waves in a microchannel. Acoustic streaming is known as fluid motion due to high intensity sound. This phenomenon usually occurs near an oscillating surface of a body in a sound field. In this study, a new acoustic pumping mechanism, different from surface acoustic streaming phenomenon, is found. According to current parameters, the new pumping mechanism can generate net flow rate about 10 times higher than the surface acoustic streaming pump. We investigate this new pumping mechanism numerically. The new pumping mechanism is further identified as results of pressure wave resonant behaviors due to finite length of microchannel. The length scale related to pressure wave resonant behaviors is found to be δL=L/π, where L is channel length. The effects of parameters including frequencies, channel heights, channel lengths and wave lengths on the velocity profile and net flow rate are also investigated..

Original languageEnglish
Title of host publication4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009
Pages747-750
Number of pages4
DOIs
Publication statusPublished - 2009
Event4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009 - Shenzhen, China
Duration: 2009 Jan 52009 Jan 8

Publication series

Name4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009

Other

Other4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2009
CountryChina
CityShenzhen
Period09-01-0509-01-08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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