WIT Press


Three Dimensional Axisymmetric Simulations Of Fluid Instabilities In Curved Geometry

Price

Free (open access)

Paper DOI

10.2495/AFM000591

Volume

29

Pages

10

Published

2000

Size

1,284 kb

Author(s)

J. Giimm, J.W. Grove & Y. Zhang

Abstract

Numerical simulations for Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) instabilities for three dimensional axisymmetric fluids have been successfully con- ducted by a front tracking method. In the first simulation, we consider single mode RT instability for an axially symmetric perturbed interface in a circular tube. We compare the computed bubble velocity with theory and laboratory experiment and find excellent agreement. The second simulation studies the RM instability for an axisymmetric sphere driven by an imploding shock. We investigate the growth rate of perturbation, the reshock process and the phase inversion phenomenon. 1 Introduction The evolution of Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) instabilities has been the focus of investigations for many

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