Effects of compressibility and transition to turbulence on flow through microchannels

K. Vijayalakshmi, K. B. Anoop, H. E. Patel, P. V. Harikrishna, T. Sundararajan, Sarit K. Das

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

A detailed experimental study of flow through long microchannels of hydraulic diameter ranging from 60.5 to 211 μm has been carried out. The internal pressure distribution along the length of the channel has been measured to analyze the local flow behaviour. The effects of compressibility and transition to turbulence occurring in the microchannel flow were investigated in detail. In addition, the resulting flow has been analyzed numerically using a commercially available CFD code, FLUENT. It has been shown that there are no special micro-scale effects, including early transition to turbulence at least in the present range of hydraulic diameters after the significant effects of compressibility are accounted appropriately.

Original languageEnglish
Pages (from-to)2196-2204
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume52
Issue number9-10
DOIs
Publication statusPublished - Apr 2009
Externally publishedYes

Fingerprint

microchannels
Microchannels
Compressibility
compressibility
Turbulence
turbulence
Hydraulics
Pressure distribution
hydraulics
Computational fluid dynamics
scale effect
internal pressure
charge flow devices
pressure distribution

Keywords

  • Compressibility
  • Developing length
  • Gas flow
  • Liquid flow
  • Microchannel
  • Non-linearity
  • Transition
  • Transition to turbulence

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Effects of compressibility and transition to turbulence on flow through microchannels. / Vijayalakshmi, K.; Anoop, K. B.; Patel, H. E.; Harikrishna, P. V.; Sundararajan, T.; Das, Sarit K.

In: International Journal of Heat and Mass Transfer, Vol. 52, No. 9-10, 04.2009, p. 2196-2204.

Research output: Contribution to journalArticle

Vijayalakshmi, K. ; Anoop, K. B. ; Patel, H. E. ; Harikrishna, P. V. ; Sundararajan, T. ; Das, Sarit K. / Effects of compressibility and transition to turbulence on flow through microchannels. In: International Journal of Heat and Mass Transfer. 2009 ; Vol. 52, No. 9-10. pp. 2196-2204.
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