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    Analysis of Magnetohydrodynamic Simulations of Convective Forces on Buoyant Flux Tubes in the Sun

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    2005_FowlerJ_THS_000744.pdf (6.519Mb)
    Author
    Fowler, John
    Advisor
    Kelly Cline; Cheryl Conover; Philip Rose
    Date of Issue
    2005-04-01
    Subject Keywords
    Magnetic flux; Magnetohydrodynamics
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    URI
    https://scholars.carroll.edu/handle/20.500.12647/3450
    Title
    Analysis of Magnetohydrodynamic Simulations of Convective Forces on Buoyant Flux Tubes in the Sun
    Type
    thesis
    Abstract
    Buoyant flux tubes of magnetic energy in the sun rise through powerful and turbulent convection to penetrate the sun’s photosphere and produce sunspots. The question studied in this research paper is: How do magnetic flux tubes rise through this violent convection to the solar surface without being destroyed? We analyze data in 128*128*300 arrays generated from supercomputer simulations of three-dimensional magnetized gas to investigate the sensitivity of flux tube survival time to different parameters: the magnetic field strength of the tubes, the viscosity of the solar fluid, and the magnetic diffusivity. We also calculate the standard deviation of magnetic energy density within the arrays to set a scale that quantitatively describes flux tube coherence. Both quantitative and qualitative measures indicate that increased magnetic field strength and increased viscosity greatly expand the time of the flux tubes’ survival, whereas increased magnetic diffusivity minutely inhibits flux tube survival time.
    Degree Awarded
    Bachelor's
    Semester
    Spring
    Department
    Mathematics, Engineering & Computer Science
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