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

V. Zivkovic, P. Zerna, Z. T. Alwahabi, M. J. Biggs

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalChemical Engineering Research and Design
Volume91
Issue number1
DOIs
Publication statusPublished - Jan 2013

Keywords

  • Couette Coefficient
  • Micro-channel
  • Micro-orifice
  • Microfluidics
  • Pressure drop

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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