Numerical Study of Two Fluid Rayleigh-Taylor Instability

• Bart J. Daly

  Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico

抄録

A new computing technique for the time-dependent calculation of the interaction of two incompressible fluids is used to study the linear and nonlinear phases of Rayleigh-Taylor instability. The variation of the linear growth rate with Reynolds number is examined for Reynolds numbers < 200 at a ratio of fluid densities of 2 : 1. These findings support Chandrasekhar's predictions of the magnitude of the growth rate and the Reynolds number for which maximum growth rate is attained. A series of inviscid flow calculations, at density ratios between 1.1 : 1 and 10 : 1, is used to explore the effect of density ratio on aspects of the nonlinear Rayleigh-Taylor instability. It is found that such influences as form drag and Kelvin-Helmholtz instability decrease rapidly in importance as the density ratio increases.

収録刊行物

• The Physics of Fluids

  The Physics of Fluids 10 (2), 297-307, 1967-02-01

  AIP Publishing

キーワード

• General Engineering

詳細情報

• CRID: 1362825895190746240
• NII論文ID: 30015748941
• NII書誌ID: AA00773996
• DOI: 10.1063/1.1762109
• ISSN: 00319171
• Web Site: https://pubs.aip.org/aip/pfl/article-pdf/10/2/297/12736795/297_1_online.pdf
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