Rayleigh-Taylor instability of swirling annular layer with mass transfer

[+] Author and Article Information
Mukesh Kumar Awasthi

Department of Mathematics, Babasaheb Bhimrao Ambedkar University, Lucknow, India

1Corresponding author.

ASME doi:10.1115/1.4042174 History: Received May 24, 2018; Revised November 29, 2018


The interfacial instability of Rayleigh-Taylor type at the cylindrical boundary involving the liquid phase and vapor phase of a fluid has been considered when the vapor is warmer than the liquid. We use viscous potential flow theory to include the viscosity at the interface. To examine the stability of the arrangement, the normal-mode analysis is performed together with the effect of heat as well as mass transfer and free swirl. The physical system consists of an annular fluid layer restricted in a cylinder with vapor phase in the core. This work investigates the effect of a variety of variables on the instability of the interface. It is found that when the heat transfer constant increases, the range of stability increases. Also the range of stability increase faster in the presence of swirling.

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