Explicit growth rates for the Rayleigh-Taylor instability in exponential density profiles
Journal Article
·
· Physical Review (Section) A: General Physics; (USA)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (US)
We consider the Rayleigh-Taylor instability in exponential density profiles and derive two approximate expressions for the growth rate that are explicit and involve only the Atwood number {ital A} and the wave number {ital k}. Our results agree with the exact growth rate within 6--12 %. We also point out that a recently published expression deviates from the exact growth rate for practically all values of {ital A} and {ital k} (M. H. Emery, J. P. Dahlburg, and J. H. Gardner, Phys. Fluids 31, 1007 (1988)).
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5287127
- Journal Information:
- Physical Review (Section) A: General Physics; (USA), Vol. 40:8; ISSN 0556-2791
- Country of Publication:
- United States
- Language:
- English
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