Dissertation Defense: New Galactic Wind Model for Cosmological Simulations by Shuiyao Huang

Wednesday, August 25, 2021
Cropped portrait style photo of Shuiyao Huang. A man with short beard and dark hair stands in front of a light beige background

The Thesis Defense will be held Wednesday, August 25, 2021 3:00pm via Zoom.


The propagation and evolution of cold galactic winds in galactic haloes is crucial to galaxy formation models. However, modeling 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.