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Author ORCID Identifier
https://orcid.org/0000-0002-6571-0738
AccessType
Campus-Only Access for One (1) Year
Document Type
dissertation
Degree Name
Doctor of Philosophy (PhD)
Degree Program
Astronomy
Year Degree Awarded
2022
Month Degree Awarded
February
First Advisor
Neal Katz
Subject Categories
External Galaxies | Numerical Analysis and Scientific Computing | Physical Processes
Abstract
The propagation and evolution of cold galactic winds in galactic haloes is crucial to galaxy formation models. However, modelling of this process in hydrodynamic simulations of galaxy formation is over-simplified owing to a lack of numerical resolution and often neglects critical physical processes such as hydrodynamic instabilities and thermal conduction. In this thesis, I propose an analytic model, Physically Evolved Winds (PhEW), that calculates the evolution of individual clouds moving supersonically through a uniform ambient medium. The model reproduces predictions from very high resolution cloud-crushing simulations that include isotropic thermal conduction over a wide range of physical conditions. I also describe the implementation of this model into cosmological hydrodynamic simulations of galaxy formation as a sub-grid prescription to model galactic winds more robustly both physically and numerically.
DOI
https://doi.org/10.7275/24811392.0
Recommended Citation
Huang, Shuiyao, "A New Galactic Wind Model for Cosmological Simulations" (2022). Doctoral Dissertations. 2413.
https://doi.org/10.7275/24811392.0
https://scholarworks.umass.edu/dissertations_2/2413
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.