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Numerical Simulations of Dynamical Mass Transfer in Binaries

We present results from investigations of mass
transfer instability in close binary star systems.
By unstable mass transfer we mean the exchange of
material where the response of the binary to the initial Roche lobe overflow causes the donor to loose even more material. Our work is guided by approximate arguments that dictate the stability
boundaries for binary star systems. To proceed further one must explicitly treat extended mass and velocity distributions that are both nitially, and through their subsequent evolution in time, self-consistent. In this dissertation, we present the first three-dimensional, fully
self-consistent treatment of mass transfer in close binary systems. To perform these calculations we have developed and tested a set of tools including a Self-Consistent Field
code for generating polytropic binaries executing synchronous rotation upon circular orbits
and a parallel, gravitational hydrodynamics code for evolving the binaries in time. We describe, in detail, these tools and their application to the evolution of binary star systems.
We present extended simulations of two detached binaries that have been used to examine the accuracy of our computational techniques in addition to the simulations of interacting binaries.

Identiferoai:union.ndltd.org:LSU/oai:etd.lsu.edu:etd-1114101-090416
Date19 November 2001
CreatorsMotl, Patrick Michael
ContributorsBob Dorroh, Joel Tohline, Paul Kirk, Richard Haymaker, Juhan Frank
PublisherLSU
Source SetsLouisiana State University
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lsu.edu/docs/available/etd-1114101-090416/
Rightsunrestricted, I hereby grant to LSU or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.

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