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Colloquium

Zoran Grujic, University of Virginia

Date:
Time:
4:00 pm – 4:50 pm
Avery Hall Room: 115
1144 T St
Lincoln NE 68508
Additional Info: AVH
Contact:
Sylvia Wiegand, (402) 472-7248, swiegand1@math.unl.edu
Title: Energy cascade in physical scales of 3D incompressible flows.

Note: This colloquium is funded by the UNL Research Council.

Abstract:

Classical turbulence phenomenology (Kolmogorov, Onsager; 1940’s) is based primarily on the empirical evidence, and it has been a great challenge for both physicists and mathematicians to derive the key features of the turbulence phenomenon directly from the basic continuum model for 3D incompressible viscous flows — the 3D Navier-Stokes equations.

The lecture will review mathematical results pertaining to hallmarks of the turbulence phenomenology: existence of the energy cascade (a nearly-constant, nonlinear transfer of the averaged energy across a range of scales — the so-called inertial range), and locality (in scale) of the averaged flux, including a new setting for the study of cascades in actual physical scales of the flow.

Local Hosts: Daniel Toundykov and Lorena Bociu

Additional Public Info:
Preceded by refreshments at 3:30 pm in Avery Hall 348.

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This event originated in Math Colloquia.