Thermally Developing Electro-osmotic Convection in Microchannels with Finite Debye-Layer Thickness

Authors: Broderick, S. L.¹; Webb, B. W.¹; Maynes, D.¹

Source: Numerical Heat Transfer Part A: Applications, Volume 48, Number 10, Number 10/December 15 2005 , pp. 941-964(24)

Publisher: Taylor and Francis Ltd

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Abstract:

Thermally developing electro-osmotically generated flow with in circular microtubes with finite Debye-layer thickness has been analyzed. This study focuses on finite Debye-layer effects, a scenario for which the velocity distribution across the tube cross section varies with the ratio of tube radius and Debye length (termed here the relative microtube radius). Numerical solution of the hydrodynamically developed, thermally developing transport for such a flow is presented in this article. The effect of variations in the relative microtube radius and strength of the Joule and viscous heating on the thermal transport are explored over the possible ranges of the governing parameters.

Document Type: Research article

DOI: 10.1080/10407780500283309

Affiliations: 1: Department of Mechanical Engineering, Brigham Young University, Provo, Utah, USA

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