Title: Turbulence, Waves, and Mean Flows in Geophysical and Astrophysical Fluid Dynamics

Speaker: Daniel Lecoanet, Northwestern University

Abstract: Fluid dynamics plays an important role across many natural systems ranging from the Earth's ocean and atmosphere, to planetary interiors and subsurface oceans and the interiors of stars. In this talk, I will describe the role and interaction of turbulence, waves, and mean flows in these systems, and how they affect predictions of their structure and evolution. I will discuss how turbulently-excited waves have been shown to drive mean flow oscillations in planetary atmospheres, and may also drive similar flows in stars. While these flows have been observed for decades, many aspects of the flows remain a mystery. Studying simplified models of these processes has led to insights that apply across atmospheric science, planetary science, and astrophysics. This highlights the importance of studying universal processes across these different systems, and how advances in fluid dynamics are crucial to the broader geophysics and astrophysics communities.

Zoom: https://northwestern.zoom.us/s/94921568430

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