Electrokinetic Flow Resistance in Pressure-driven Liquid Flow through a Slit-like Microfluidic Contraction

Davidson, Malcolm R., Harvie, Dalton J. E. and Liovic, Petar (2007). Electrokinetic Flow Resistance in Pressure-driven Liquid Flow through a Slit-like Microfluidic Contraction. In: Peter Jacobs, Tim McIntyre, Matthew Cleary, David Buttsworth, David Mee, Rose Clements, Richard Morgan and Charles Lemckert, 16th Australasian Fluid Mechanics Conference (AFMC). 16th Australasian Fluid Mechanics Conference (AFMC), Gold Coast, Queensland, Australia, (798-802). 3-7 December, 2007.

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Author Davidson, Malcolm R.
Harvie, Dalton J. E.
Liovic, Petar
Title of paper Electrokinetic Flow Resistance in Pressure-driven Liquid Flow through a Slit-like Microfluidic Contraction
Conference name 16th Australasian Fluid Mechanics Conference (AFMC)
Conference location Gold Coast, Queensland, Australia
Conference dates 3-7 December, 2007
Proceedings title 16th Australasian Fluid Mechanics Conference (AFMC)
Place of Publication Brisbane, Australia
Publisher School of Engineering, The University of Queensland
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 978-1-864998-94-8
Editor Peter Jacobs
Tim McIntyre
Matthew Cleary
David Buttsworth
David Mee
Rose Clements
Richard Morgan
Charles Lemckert
Start page 798
End page 802
Total pages 5
Collection year 2007
Language eng
Abstract/Summary The electrokinetic flow resistance (electroviscous effect) in steady state, pressure-driven liquid flow in a slit-like microfluidic contraction at low Reynolds number is predicted using a finite volume numerical method. A uniform charge density is assumed on the channel walls and the liquid is taken to be a symmetric 1:1 electrolyte. Predictions of the apparent viscosity are shown to be well described by a simple theory that calculates the pressure drop along the channel by adding the pressure losses in the inlet, contraction and outlet sections (based on the classical electrokinetic flow solution in a uniform slit) to the entry and exit losses due to the contraction. These entry and exit losses are approximated using the low Reynolds number analytical solution for a slit orifice without electrokinetic effects
Subjects 290000 Engineering and Technology
Keyword electrokinetic
microfluidic
electrolyte
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: 16th Australasian Fluid Mechanics Conference
 
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Created: Wed, 19 Dec 2007, 11:44:33 EST by Bikash Das on behalf of School of Engineering