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Plasma Physics (Physics/ECE/NE 922) Seminars

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Event Number 4638

  Monday, November 6th, 2017

A General Framework to Analyzing Multi-Scale Complex Flows: Applications to Oceanic, Plasma, and Compressible Flows
Time: 12:00 pm
Place: Chamberlin 2241
Speaker: Prof. Hussein Aluie, University of Rochester
Abstract: Flows in nature and in engineering are often complex, forced by external agents, boundary stresses, and internal instabilities, and pervaded by multiscale structures such as eddies, plumes, jets, waves, and turbulence --spanning many orders of magnitude in size. The nonlinear nature of the dynamics implies a coupling between these multiple scales, which often plays a major role in determining mean-flow evolution and is a primary factor limiting our predictive modeling capabilities. To tackle this class of problems in fluid dynamics, I will present a scale-analysis framework we have been developing that is rooted in commonly used techniques in the subjects of PDEs and Large Eddy Simulation modeling (LES). The approach is very general and allows for resolving nonlinear processes at any scale and at any location in the flow. It relies on a synergistic interplay between rigorous mathematics, physical insight, and numerical computations to probe large data sets from simulations, satellite observations, and experimental measurements. I will discuss the application of this methodology to oceanic, plasma, and compressible flows.
Host: Stanislav Boldyrev
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