Full Content is available to subscribers

Subscribe/Learn More  >

Analysis of Non-Newtonian Fluids in Microchannels With Different Wall Materials

[+] Author Affiliations
Masoud Darbandi, Mohammad Behshad Shafii, Salman SafariMohsenabad

Sharif University of Technology, Tehran, Iran

Paper No. ICNMM2009-82256, pp. 697-703; 7 pages
  • ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels
  • ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels
  • Pohang, South Korea, June 22–24, 2009
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 978-0-7918-4349-9 | eISBN: 978-0-7918-3850-1
  • Copyright © 2009 by ASME


The behavior of non-Newtonian fluids is considered as an important subject in micro scale and microfluidic flow researches. Because of the complexity and cost in the numerical works and the experimental set-ups in some instances, the analytical approach can be taken into account as a robust alternative tool to solve the non-Newtonian microfluidic flows in some special cases benefiting from a few simplified assumptions. In this work, we analyze the flow of two non-Newtonian fluids including the power-law and grade-fluid models in microchannels. For the grade-fluid, the stress tensors are defined considering the Rivlin-Ericksen tensor definitions. To avoid the complexities in the entrance region, the flow is assumed to be hydrodynamically developed. The flow is steady and laminar and the fluid has constant properties independent of its temperature. We treat three different relations between slip velocity and wall shear stress as the slip boundary condition in our analysis. The Homotopy perturbation method is applied to solve the Navier-Stokes equations in case of grade fluid. To achieve the best slip coefficient, our power-law model solution is compared with available experimental data. Moreover, we compare the results of our Homotopy perturbation method with the numerical solutions. The current results show that the best slip relation is the one with a square of wall shear stress dependency.

Copyright © 2009 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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.

Related eBook Content
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