Parameter space studies for the self-gravity interfacial instability

Details Parameter space studies for the self-gravity interfacial instability Parameter space studies for the self-gravity interfacial instability

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20311113p&link_type=abstract

American Astronomical Society Meeting 203, #111.13; Bulletin of the American Astronomical Society, Vol. 36, p.582

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Hydrodynamic instabilities play an important role in determining the morphology and evolution of astronomical entities. Any interface of discontinuous density is subject to instabilities, including Rayleigh-Taylor, Kelvin-Helmholtz, and a recently discovered instability driven by self-gravity. In an ongoing computational study, we seek to validate the linear theory developed for the self-gravity driven interfacial instability (SGI) and examine its nonlinear behavior. Here, we present the results from hydrodynamic simulations designed to expand the parameter space and investigate the effects of compressibility, perturbation strength, and Atwood number. We also look forward toward modeling coupled effects due to multiple instabilities.

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