Kelvin-Helmholtz instability of viscoelastic liquid-viscous gas interface with heat and mass transfer

2020 ◽  
pp. 106710 ◽  
Author(s):  
Mukesh Kumar Awasthi
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Viscoelastic Liquid ◽  
Helmholtz Instability ◽  
Viscous Gas

Capillary Instability of Viscoelastic Liquid Film With Heat and Mass Transfer

2019 ◽  
Vol 142 (2) ◽  
Author(s):  
Mukesh Kumar Awasthi
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Viscoelastic Liquid ◽  
Capillary Instability ◽  
Viscous Potential Flow ◽  
Viscous Gas ◽  
Coaxial Cylinders ◽  
Fluid Layers ◽  
The Stability ◽  
Two Fluid

Abstract This paper examines the effect of transfer of heat and mass on the capillary instability between a viscoelastic liquid and a viscous gas. The viscoelastic liquid obeys the Oldroyd B-model. These two fluid layers considered in coaxial cylinders and viscoelastic–viscous potential flow theory are used for investigation. To study the stability of the interface, the normal-mode procedure is employed and a cubic dispersion equation in terms of growth rate has been obtained. We observe that the viscoelastic liquid–viscous gas interface is more unstable than the viscous liquid–viscous gas interface. Additionally, we show that the unstable axisymmetric wave modes are stabilized by allowing heat transfer at the interface.

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