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DTSTART;TZID=America/Los_Angeles:20210412T150000
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DTSTAMP:20260611T165530
CREATED:20210112T180713Z
LAST-MODIFIED:20210406T193121Z
UID:2110-1618239600-1618243200@colleges.claremont.edu
SUMMARY:Applied math. talk:  Large Eddy Simulation Reduced Order Models  by Traian Iliescu\, Virginia Tech
DESCRIPTION:In this talk\, we present reduced order models (ROMs) for turbulent flows\,\nwhich are constructed by using ideas from large eddy simulation (LES) and\nvariational multiscale (VMS) methods.  First\, we give a\ngeneral introduction to reduced order modeling and emphasize the\nconnection to classical Galerkin methods (e.g.\, the finite element method)\nand the central role played by data.  Then\, we describe the closure\nproblem\, which represents one of the main obstacles in the development of\nROMs for realistic\, turbulent flows.  To tackle the ROM closure problem\,\nwe use ROM spatial filters (e.g.\, the ROM projection and the ROM\ndifferential filter) and build new LES-ROMs that capture the large scale\nROM features and model the interaction between these large scales and the\nsmall scale ROM features. Finally\, we present results for these LES-ROMs\nin the numerical simulation of\nunder-resolved engineering flows (e.g.\, flow past a cylinder and\nturbulent channel flow) and the quasi-geostrophic equations (which model\nthe large scale ocean circulation).
URL:https://colleges.claremont.edu/ccms/event/applied-math-talk-by-traian-iliescu-virginia-tech/
LOCATION:Zoom meeting\, United States
CATEGORIES:Applied Math Seminar
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