Paper Title:
Viscous Potential Flow Analysis of Rayleigh-Taylor Instability of Cylindrical Interface
  Abstract

The present paper deals with the study of Rayleigh-Taylor instability at the cylindrical interface using viscous potential flow theory. In the inviscid potential flow theory, the viscous term in Navier-Stokes equation vanishes as viscosity is zero. In viscous potential flow, the viscous term in Navier-Stokes equation vanishes as vorticity is zero but viscosity is not zero. Viscosity enters through normal stress balance in viscous potential flow theory and tangential stresses are not considered. A dispersion relation is derived and stability is discussed in terms of various parameters such as Ohnesorge number, density ratio etc. A condition for neutral stability is obtained and it is given in terms of critical value of the wave number. It is observed that the Ohnesorge number has destabilizing effect while inner fluid fraction has stabilizing effect on the stability of the system.

  Info
Periodical
Chapter
Chapter 4: Surface, Subsurface, and Interface Phenomena
Edited by
Wu Fan
Pages
769-775
DOI
10.4028/www.scientific.net/AMM.110-116.769
Citation
R. Asthana, M. K. Awasthi, G.S. Agrawal, "Viscous Potential Flow Analysis of Rayleigh-Taylor Instability of Cylindrical Interface", Applied Mechanics and Materials, Vols. 110-116, pp. 769-775, 2012
Online since
October 2011
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Price
$32.00
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