Events at Physics
Events on Sunday, March 24th, 2013
- Distinguished Lecture Series
- "Cosmology on a Moving Mesh"
- Time: 4:00 pm
- Place: 1310 Sterling Hall
- Speaker: Lars Hernquist, Harvard University
Understanding the formation and evolution of galaxies in a cosmological context using numerical simulations remains an elusive goal. In this talk, I describe a new approach to modeling the hydrodynamics of galaxy formation in which the equations of motion are solved on a moving mesh. The use of a moving mesh makes the scheme fully Lagrangian, unlike popular particle-based codes which are quasi-Lagrangian in nature, and mitigates against advection errors when a spatially fixed grid is used. I present results from an initial study comparing results for a moving mesh with those obtained using a smoothed particle hydrodynamics solver. This preliminary work suggests that the new approach offers promise for resolving the long-standing problems which have plagued this field for nearly two decades.
- Host: Prof Elena D'Onghia