3D numerical micro-cooling analysis for an electrohydrodynamic micro-pump

Chia Wen Lin, Jiin-Yuh Jang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A 3D numerical thermal-hydraulic analysis for a micro-channel flow induced by an electrohydrodynamic (EHD) pump was studied. The micro pump provides the required pumping power by using the dipole moment force generated from polarizing fluid molecules. The effects of different electrode pitches (5-200 μm) and electrode angles (θ = 2° and θ = 6°) are investigated in detailed for different applied voltage VE ranging from 100 V to 500 V, using HFE-7100 and oil as the working fluids. It is found that the EHD micro pump is more effective for smaller channel pitch and higher applied voltage. For VE = 500 V and parallel electrodes with pitch = 50 μm, this study identifies the performance of 13 kPa in the pressure head and 10 W/cm2 in the wall heat flux (cooling capacity). It is also shown that the larger angle for non-parallel electrodes, the more micro pumping force. In addition, as the pitch is reduced to 5 μm, the pressure head and cooling capacity could reach 54 kPa and 223 W/cm2, respectively.

Original languageEnglish
Pages (from-to)167-176
Number of pages10
JournalSensors and Actuators, A: Physical
Volume122
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2005 Jul 29

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Electrohydrodynamics
electrohydrodynamics
pressure heads
Pumps
pumps
Cooling
cooling
Electrodes
electrodes
pumping
Fluids
working fluids
Dipole moment
Electric potential
channel flow
Channel flow
hydraulics
Heat flux
heat flux
high voltages

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

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abstract = "A 3D numerical thermal-hydraulic analysis for a micro-channel flow induced by an electrohydrodynamic (EHD) pump was studied. The micro pump provides the required pumping power by using the dipole moment force generated from polarizing fluid molecules. The effects of different electrode pitches (5-200 μm) and electrode angles (θ = 2° and θ = 6°) are investigated in detailed for different applied voltage VE ranging from 100 V to 500 V, using HFE-7100 and oil as the working fluids. It is found that the EHD micro pump is more effective for smaller channel pitch and higher applied voltage. For VE = 500 V and parallel electrodes with pitch = 50 μm, this study identifies the performance of 13 kPa in the pressure head and 10 W/cm2 in the wall heat flux (cooling capacity). It is also shown that the larger angle for non-parallel electrodes, the more micro pumping force. In addition, as the pitch is reduced to 5 μm, the pressure head and cooling capacity could reach 54 kPa and 223 W/cm2, respectively.",
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3D numerical micro-cooling analysis for an electrohydrodynamic micro-pump. / Lin, Chia Wen; Jang, Jiin-Yuh.

In: Sensors and Actuators, A: Physical, Vol. 122, No. 1 SPEC. ISS., 29.07.2005, p. 167-176.

Research output: Contribution to journalArticle

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