A Review on Double-diffusive Instability in Viscosity Stratified Flows

Sahu, Kirti Chandra (2014) A Review on Double-diffusive Instability in Viscosity Stratified Flows. Proceedings of the Indian National Science Academy, 80 (3). p. 513. ISSN 0370-0046

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Double diffusive (DD) convection is a phenomenon frequently observed in the oceans and in many industrial situations (Govindarajan and Sahu, 2014). The “double-diffusive flow” means the flow in the presence of two species, which are diffusing at different rates. In this review, the instabilities that arise due to the double-diffusive effects in conditions which are supposed to be stable, according to our intuition, are discussed. The review is restricted to viscosity-stratified flows in two configurations, namely, core-annular/three-layer, and displacement flows. It is to be noted that the DD phenomena in density-stratified systems have been very well studied in the literature (see for example Turner, 1974), and this is not the subject of this review. However, a brief overview of double-diffusive phenomena in density stratified systems is given below, which will help us in understanding the underlying physics i n t he present systems

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IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandrahttp://orcid.org/0000-0002-7357-1141
Item Type: Article
Uncontrolled Keywords: Miscible Flow; Double-Diffusive Instability; Multiphase Flow; Mixing; Laminar Flow; Numerical Simulation; Linear Stability Analysis
Subjects: Chemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Library Staff
Date Deposited: 23 Aug 2019 05:20
Last Modified: 23 Aug 2019 05:20
URI: http://raiith.iith.ac.in/id/eprint/6008
Publisher URL: http://doi.org/10.16943/ptinsa/2014/v80i3/55126
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