Effect of miscibility on the linear instability of two-fluid channel flow

Govindarajan, Rama (2004) Effect of miscibility on the linear instability of two-fluid channel flow International Journal of Multiphase Flow, 30 (10). pp. 1177-1192. ISSN 0301-9322

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.ijmultiphaseflow.2004.06.006

Abstract

This study provides an extension into the finite-miscibility regime of theories for interfacial instabilities in two-fluid channel flow. When the two fluids are of high mass diffusivity, a new mode of instability, called here the overlap mode, appears when the critical layer of the dominant disturbance overlaps the viscosity-stratified layer. For poor diffusivity, the instability is qualitatively different: broadband and at low reynolds number, beginning to resemble the Yih mode for immiscible interfaces. The results lend themselves to verification by experiment and direct numerical simulation.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Instability Of Two-fluid Flow; Miscibility; Viscosity-stratification
ID Code:62419
Deposited On:22 Sep 2011 03:23
Last Modified:22 Sep 2011 03:23

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