Numerical simulation of non-isothermal pressure-driven miscible channel flow with viscous heating

Sahu, Kirti Chandra and Ding, H and Matar, O K (2010) Numerical simulation of non-isothermal pressure-driven miscible channel flow with viscous heating. Chemical Engineering Science, 65 (10). pp. 3260-3267. ISSN 0009-2509

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We study the pressure-driven, non-isothermal miscible displacement of one fluid by another in a horizontal channel with viscous heating. We solve the continuity, Navier-Stokes, and energy conservation equations coupled to a convective-diffusion equation for the concentration of the more viscous fluid. The viscosity is assumed to depend on the concentration as well as the temperature, while density contrasts are neglected. Our transient numerical simulations demonstrate the development of 'roll-up' of the 'interface' separating the fluids and vortical structures whose intensity increases with the temperature of the invading fluid. This brings about fluid mixing and accelerates the displacement of the fluid originally occupying the channel. Increasing the level of viscous heating gives rise to high-temperature, low-viscosity near-wall regions. The increase in viscous heating retards the propagation of the invading fluid but accelerates the ultimate displacement of the resident fluid. © 2010 Elsevier Ltd.

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IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandra
Item Type: Article
Uncontrolled Keywords: Isothermal flow; Viscous heating; Channel flow; Miscible flow; Stability; Interfacial flow
Subjects: Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Users 3 not found.
Date Deposited: 10 Oct 2014 08:09
Last Modified: 15 May 2018 08:56
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