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Characterization of electromagnetohydrodynamic transport of power law fluids in microchannel

Sarkar, Sandip and Ganguly, Suvankar (2017) Characterization of electromagnetohydrodynamic transport of power law fluids in microchannel. In: JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 250 . pp. 18-30.

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Official URL: http://dx.doi.org/ 10.1016/j.jnnfm.2017.10.006


We characterize, electrokinetically modulated axial pressure driven transport of a power-law fluid through microchannel in the presence of superimposed magnetic field. We obtain solutions for streaming potential, velocity, and temperature fields owing to a combined interplay of the flow rheology, kinematics, influences of finite ion sizes (steric effect), and the electromagnetohydrodynamics. Our results demonstrate that giant augmentations in the energy conversion efficiency and streaming potential field may be achieved for shear thickening fluids in the presence of superimposed magnetic field. Our analysis reveals that heat transfer rate can be amplified by enhancing magnetic field magnitude and the power law behavioural indices. We, further, carried out an exergy analysis for an optimal process design via reducing irreversibilities in terms of ``entropy generation analysis''. We found that the total irreversibilities of the system decreases with increasing the values of power law index. We believe that the inferences obtained from the present research may be useful in the design of advanced energy efficient devices, smart sensors, etc., with optimal combinations of power law rheology and magnetohydrodynamic influences.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: review EPrints Reviewer
Date Deposited: 13 Jan 2018 06:49
Last Modified: 13 Jan 2018 06:49
URI: http://eprints.iisc.ac.in/id/eprint/58589

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