Dissertation/Thesis
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Contour advection tracer method in smoothed particle hydrodynamics

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Contour advection tracer method in smoothed particle hydrodynamics
Συγγραφείς: Fields, Tiffany M.
Συνεισφορές: Thacker, Robert John, 1970-
Έτος έκδοσης: 2019
Συλλογή: Saint Mary's University, Halifax: Institutional Repository
Θεματικοί όροι: QB857.5.E96, Galaxies -- Evolution -- Mathematical models, Hydrodynamics -- Mathematical models
Περιγραφή: xxii, 139 leaves : colour illustrations ; 29 cm ; Includes abstract. ; Includes bibliographical references (leaves 135-139). ; Studying the evolution of galaxies is important in understanding many other astrophysical phenomenon. However, this process required numerical work due to long timescales over which evolution occurs. To study the effects of chaotic mixing within a galactic disk, we implemented a contour advection method using tracers to follow the flow of gas within a disk. In this thesis, we examined effects of integration properties such as timestep normalization, artificial viscosity, temperature ceiling, and more to determine ways that our tracer method produced errors during evolution. We found that the primary issue with the tracer method was how tracers experienced shock regions, or regions of steep density contrasts. When tracers experienced too much shock heating, they overheated and were ejected from the disk, but when experiencing too little shock heating, they owed through shocks without feeling the effects. Both of these instances led to incorrect following of the gas flow.
Τύπος εγγράφου: Thesis
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: QB857.5 E96 F54 2019; http://library2.smu.ca/handle/01/29015
Διαθεσιμότητα: http://library2.smu.ca/handle/01/29015
Αριθμός Καταχώρησης: edsbas.9A2D1D9F
Βάση Δεδομένων: BASE
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  Data: Contour advection tracer method in smoothed particle hydrodynamics
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  Data: <searchLink fieldCode="AR" term="%22Fields%2C+Tiffany+M%2E%22">Fields, Tiffany M.</searchLink>
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  Data: Thacker, Robert John, 1970-
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  Data: 2019
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  Data: Saint Mary's University, Halifax: Institutional Repository
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  Data: <searchLink fieldCode="DE" term="%22QB857%2E5%2EE96%22">QB857.5.E96</searchLink><br /><searchLink fieldCode="DE" term="%22Galaxies+--+Evolution+--+Mathematical+models%22">Galaxies -- Evolution -- Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics+--+Mathematical+models%22">Hydrodynamics -- Mathematical models</searchLink>
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  Data: xxii, 139 leaves : colour illustrations ; 29 cm ; Includes abstract. ; Includes bibliographical references (leaves 135-139). ; Studying the evolution of galaxies is important in understanding many other astrophysical phenomenon. However, this process required numerical work due to long timescales over which evolution occurs. To study the effects of chaotic mixing within a galactic disk, we implemented a contour advection method using tracers to follow the flow of gas within a disk. In this thesis, we examined effects of integration properties such as timestep normalization, artificial viscosity, temperature ceiling, and more to determine ways that our tracer method produced errors during evolution. We found that the primary issue with the tracer method was how tracers experienced shock regions, or regions of steep density contrasts. When tracers experienced too much shock heating, they overheated and were ejected from the disk, but when experiencing too little shock heating, they owed through shocks without feeling the effects. Both of these instances led to incorrect following of the gas flow.
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      – Text: English
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      – SubjectFull: QB857.5.E96
        Type: general
      – SubjectFull: Galaxies -- Evolution -- Mathematical models
        Type: general
      – SubjectFull: Hydrodynamics -- Mathematical models
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      – TitleFull: Contour advection tracer method in smoothed particle hydrodynamics
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            NameFull: Thacker, Robert John, 1970-
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              Y: 2019
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