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A pressure drop correlation for low Reynolds number Newtonian flows through a rectangular orifice in a similarly shaped micro-channel

Lookup NU author(s): Dr Vladimir Zivkovic

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Abstract

Current microfabrication methods mean that rectangular orifices in similarly shaped micro-channels are often found in microfluidic devices. The power required to overcome the pressure drop across such orifices is often of importance. In the contribution reported here, numerical results for low Reynolds number incompressible Newtonian fluid flow through rectangular orifice in similarly shaped micro-channel have been used to develop a correlation for pressure drop arising from the orifice. The correlation, which was motivated by theoretical developments, indicates that the pressure drop is proportional to the average velocity through the orifice, and a function of the orifice contraction ratio, length-to-width ratio and, most particularly, aspect ratio.

Publication metadata

Author(s): Zivkovic V, Zerna P, Alwahabi ZT, Biggs MJ

Publication type: Article

Publication status: Published

Journal: Chemical Engineering Research and Design

Year: 2013

Volume: 91

Issue: 1

Pages: 1-6

Print publication date: 20/06/2012

ISSN (print): 0263-8762

ISSN (electronic): 1744-3563

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.cherd.2012.05.022

DOI: 10.1016/j.cherd.2012.05.022

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