Effect of electric field on the linear stability characteristics of two-layer channel of Newtonian and Herschel-Bulkley fluids

Kumar, Gautam and P A, Lakshmi Narayana and Sahu, Kirti Chandra (2019) Effect of electric field on the linear stability characteristics of two-layer channel of Newtonian and Herschel-Bulkley fluids. In: 72nd Annual Meeting of the APS Division of Fluid Dynamics, 23–26 November 2019, Seattle, Washington.

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Abstract

We investigate the effect of electric field on the linear stability characteristics of pressure-driven flow in a channel, wherein a Newtonian fluid layer superposed on a layer of Herschel-Bulkley fluid. Both fluids are assumed to be incompressible and leaky dielectric media. The modified Orr-Sommerfeld eigenvalue equations are derived and solved using an efficient spectral collocation method. An asymptotic analysis is also performed in the long-wave limit. The effects of electric field, Bingham number, flow index and the ratios of density, viscosity, electrical conductivity and permittivity between the fluids are studied. We observed that the electric field can stabilize or destabilize the systems in different regimes.

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IITH Creators:	IITH Creators ORCiD P A, Lakshmi Narayana UNSPECIFIED Sahu, Kirti Chandra http://orcid.org/0000-0002-7357-1141
Item Type:	Conference or Workshop Item (Paper)
Subjects:	Mathematics Chemical Engineering
Divisions:	Department of Chemical Engineering
Depositing User:	Library Staff
Date Deposited:	30 Sep 2019 05:41
Last Modified:	30 Sep 2019 05:41
URI:	http://raiithold.iith.ac.in/id/eprint/6425
Publisher URL:
Related URLs:	Google Scholar

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