Computational modeling of a piezoelectrically actuated microvalve for the control of liquid flowrate

S. M. Saeidi, J. M. Khodadadi, C. A. Johnson, C. Lee, E. H. Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Computational modeling of liquid flow in a piezoelectrically actuated microvalve is discussed. A 3-D structured mesh with 330,000 hexahedral cells that represents the major features of the microvalve was generated for the numerical model. Due to the symmetry of the microvalve about two planes, only one-fourth of the microvalve was modeled. The mesh is denser in the regions which experience excessive pressure drop. The commercial CFD code FLUENT was utilized for the solution of the continuity and momentum equations. The three-dimensional velocity and pressure fields were obtained. By changing the mass flow rate at the inlet, the pressure drop between the inlet and outlet ports is found and a loss coefficient is determined for every deflection. The predicted pressure drop values are compared to the experimental data for water flow within the microvalve.

Original languageEnglish
Title of host publication2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 Technical Proceedings
EditorsM. Laudon, B. Romanowicz
Pages573-576
Number of pages4
StatePublished - 2005
Event2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 - Anaheim, CA, United States
Duration: 8 May 200512 May 2005

Publication series

Name2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005 Technical Proceedings

Conference

Conference2005 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2005
Country/TerritoryUnited States
CityAnaheim, CA
Period8/05/0512/05/05

Keywords

  • CFD
  • Liquid flow
  • Microfluidics
  • Microvalve
  • Modeling

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