Density Ratio and Entrainment Effects on Asymptotic Rayleigh-Taylor Instability

Assaf Shimony, Guy Malamud, Dov Shvarts

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

A comprehensive numerical study was performed in order to examine the effect of density ratio on the mixing process inside the mixing zone formed by Rayleigh-Taylor instability (RTI). This effect exhibits itself in the mixing parameters and increase of the density of the bubbles. The motivation of this work is to relate the density of the bubbles to the growth parameter for the self-similar evolution, α, we suggest an effective Atwood formulation, found to be approximately half of the original Atwood number. We also examine the sensitivity of the parameters above to the dimensionality (two-dimensional (2D)/three-dimensional (3D)) and to numerical miscibility.

Original languageEnglish
Article number050906
JournalJournal of Fluids Engineering, Transactions of the ASME
Volume140
Issue number5
DOIs
StatePublished - 1 May 2018

ASJC Scopus subject areas

  • Mechanical Engineering

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