0
Journal of Fluids Engineering | Volume 131 | Issue 4 | Research Paper
Research Papers: Fundamental Issues and Canonical Flows

Pressure Drop in Rectangular Microchannels as Compared With Theory Based on Arbitrary Cross Section

[+] Author and Article Information
Mohsen Akbari1

Mechatronic System Engineering, School of Engineering Science, Simon Fraser University, Surrey, BC, V3T 0A3, Canadamaa59@sfu.ca

David Sinton

Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8W 2Y2, Canada

Majid Bahrami

Mechatronic System Engineering, School of Engineering Science, Simon Fraser University, Surrey, BC, V3T 0A3, Canada

1

Corresponding author.

J. Fluids Eng 131(4), 041202 (Mar 06, 2009) (8 pages) doi:10.1115/1.3077143 History: Received June 11, 2008; Revised December 05, 2008; Published March 06, 2009
Article
References
Figures
Tables
Citing Articles

Pressure driven liquid flow through rectangular cross-section microchannels is investigated experimentally. Polydimethylsiloxane microchannels are fabricated using soft lithography. Pressure drop data are used to characterize the friction factor over a range of aspect ratios from 0.13 to 0.76 and Reynolds number from 1 to 35 with distilled water as working fluid. Results are compared with the general model developed to predict the fully developed pressure drop in arbitrary cross-section microchannels. Using available theories, effects of different losses, such as developing region, minor flow contraction and expansion, and streaming potential on the measured pressure drop, are investigated. Experimental results compare well with the theory based on the presure drop in channels of arbitrary cross section.
FIGURES IN THIS ARTICLE
<>
Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
+Schematic of the soft lithography technique
View Large  |  Save Figure  |  Download Slide (.ppt)
Schematic of the soft lithography technique
Figure 1

Schematic of the soft lithography technique

Grahic Jump Location
+Schematic of the test section
View Large  |  Save Figure  |  Download Slide (.ppt)
Schematic of the test section
Figure 2

Schematic of the test section

Grahic Jump Location
+Channel pressure drop as a function of flow rate. Lines show the theoretical prediction of pressure drop using Eq. 3 and symbols show the experimental data.
View Large  |  Save Figure  |  Download Slide (.ppt)
Channel pressure drop as a function of flow rate. Lines show the theoretical prediction of pressure drop using Eq. 3 and symbols show the experimental data.
Figure 3

Channel pressure drop as a function of flow rate. Lines show the theoretical prediction of pressure drop using Eq. 3 and symbols show the experimental data.

Grahic Jump Location
+Variation in friction factor with Reynolds number for sample no. PPR-0.13
View Large  |  Save Figure  |  Download Slide (.ppt)
Variation in friction factor with Reynolds number for sample no. PPR-0.13
Figure 4

Variation in friction factor with Reynolds number for sample no. PPR-0.13

Grahic Jump Location
+Variation in friction factor with Reynolds number for sample no. PPR-0.76
View Large  |  Save Figure  |  Download Slide (.ppt)
Variation in friction factor with Reynolds number for sample no. PPR-0.76
Figure 5

Variation in friction factor with Reynolds number for sample no. PPR-0.76

Grahic Jump Location
+Variation in Poiseuille number, f ReA, with Reynolds number
View Large  |  Save Figure  |  Download Slide (.ppt)
Variation in Poiseuille number, f ReA, with Reynolds number
Figure 6

Variation in Poiseuille number, f ReA, with Reynolds number

Grahic Jump Location
+Comparison of experimental data of present work with analytical model of Bahrami (1)
View Large  |  Save Figure  |  Download Slide (.ppt)
Comparison of experimental data of present work with analytical model of Bahrami (1)
Figure 7

Comparison of experimental data of present work with analytical model of Bahrami (1)

Grahic Jump Location
+Variation in Poiseuille number, f ReA, with Reynolds number
View Large  |  Save Figure  |  Download Slide (.ppt)
Variation in Poiseuille number, f ReA, with Reynolds number
Figure 8

Variation in Poiseuille number, f ReA, with Reynolds number

Grahic Jump Location
+Comparison between experimental data of present study and previous works
View Large  |  Save Figure  |  Download Slide (.ppt)
Comparison between experimental data of present study and previous works
Figure 9

Comparison between experimental data of present study and previous works

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In