Non-Newtonian Fluid Flow and Heat Transfer in Microchannels

Abstract:

Convective heat transfer of non-Newtonian power-law fluids in a microchannel is investigated. The governing parameters include the flow behavior index, the length scale ratio (ratio of Debye length to half channel height), the Joule heating parameter (ratio of Joule heating to surface heat flux), and the Brinkman number. Analytical expressions are presented for velocity and temperature profiles, as well as the Nusselt number. The flow and heat transfer parameters can be obtained by numerical integrations of the analytical expressions. The dimensionless temperature distribution across the microchannel and the fully-developed Nusselt number are illustrated for a wide range of governing parameters.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 462-465
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.462
• Online since: January 2013
• Authors: Chien Hsin Chen, Yunn Lin Hwang, Shen Jenn Hwang
• Keywords: Electroosmosis, Joule Heating, Microchannel Flow, Power-Law Fluid

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