Numerical Study of Magnetohydrodynamic Flows in Astrophysics with Spectral Methods

Persistent Link:
http://hdl.handle.net/10150/195440
Title:
Numerical Study of Magnetohydrodynamic Flows in Astrophysics with Spectral Methods
Author:
Chan, Chi-kwan
Issue Date:
2007
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Disk phenomena appear in many astrophysical systems and interact with almost any kind of objects in the Universe. Understanding the dynamics of disks is one of the most important areas of study in modern astrophysics. Although theoretical study of accretion disks have been carried out for half a century, we have not yet achieved a self-consistent understanding. The major difficulties of accretion theory comes from the non-linearity of magnetohydrodynamics as well as the large degree of freedom in turbulent flows, where analytical studies bring limited progress. This dissertation is about developing new numerical algorithms based on analytical understanding in order to describe the dynamics of accretion disks and to study astrophysical turbulence. I will present a new pseudo-spectral algorithm that we developed to study turbulence as well as the stability and general properties of accretion disks. I will show the strengths of this new algorithm in comparison to other previously developed ones. I will also present the results from applications of these algorithms to several problems involving accretion disks.
Type:
text; Electronic Dissertation
Degree Name:
PhD
Degree Level:
doctoral
Degree Program:
Physics; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Psaltis, Dimitrios; Ozel, Feryal
Committee Chair:
Psaltis, Dimitrios; Ozel, Feryal

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleNumerical Study of Magnetohydrodynamic Flows in Astrophysics with Spectral Methodsen_US
dc.creatorChan, Chi-kwanen_US
dc.contributor.authorChan, Chi-kwanen_US
dc.date.issued2007en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractDisk phenomena appear in many astrophysical systems and interact with almost any kind of objects in the Universe. Understanding the dynamics of disks is one of the most important areas of study in modern astrophysics. Although theoretical study of accretion disks have been carried out for half a century, we have not yet achieved a self-consistent understanding. The major difficulties of accretion theory comes from the non-linearity of magnetohydrodynamics as well as the large degree of freedom in turbulent flows, where analytical studies bring limited progress. This dissertation is about developing new numerical algorithms based on analytical understanding in order to describe the dynamics of accretion disks and to study astrophysical turbulence. I will present a new pseudo-spectral algorithm that we developed to study turbulence as well as the stability and general properties of accretion disks. I will show the strengths of this new algorithm in comparison to other previously developed ones. I will also present the results from applications of these algorithms to several problems involving accretion disks.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
thesis.degree.namePhDen_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorPsaltis, Dimitriosen_US
dc.contributor.advisorOzel, Feryalen_US
dc.contributor.chairPsaltis, Dimitriosen_US
dc.contributor.chairOzel, Feryalen_US
dc.contributor.committeememberCheu, Elliotten_US
dc.contributor.committeememberDienes, Keithen_US
dc.contributor.committeememberVisscher, Koenen_US
dc.identifier.proquest2102en_US
dc.identifier.oclc659747213en_US
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