MMAE Seminar - Beverley J. McKeon - Systems Analysis of Wall Turbulence: Characterizing Natural and Synthetic Self-sustaining Processes

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John T. Rettaliata Engineering Center, Room 104, 10 West 32nd Street, Chicago, IL 60616
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Armour College of Engineering's Mechanical, Materials & Aerospace Engineering Department will welcome Dr. Beverley J. McKeon, Professor of Aeronautics and Associate Director of the Graduate Aerospace Laboratories at California Institute of Technology, on Wednesday, April 12th, to present her lecture, Systems Analysis of Wall Turbulence: Characterizing Natural and Synthetic Self-sustaining Processes.

Abstract

The financial and environmental cost of turbulence is staggering: manage to quell turbulence in the thin boundary layers on the surface of a commercial airliner and you could almost halve the total aerodynamic drag, dramatically cutting fuel burn, emissions and cost of operation. Yet systems-level tools to model scale interactions or control turbulence remain relatively under-developed. The resolvent analysis for turbulent flow proposed by McKeon & Sharma (J. Fluid Mech, 2010) provides a simple, but rigorous, approach by which to deconstruct the full turbulence field into a linear combination of (interacting) modes. After a brief review of some key results that can be obtained by analysis of the linear resolvent operator concerning the statistical and structural make-up of wall turbulence, I will describe some of our recent progress towards determining how to reconstruct self-sustaining turbulent systems, both natural and synthetic. Implications for both the classical picture of wall turbulence and control of turbulent flows will be discussed.

Biography

Beverley McKeon is Professor of Aeronautics and Associate Director of the Graduate Aerospace Laboratories at Caltech (GALCIT). Her research interests include interdisciplinary approaches to manipulation of boundary layer flows using morphing surfaces and fundamental investigations of wall turbulence at high Reynolds number. She was the recipient of a Presidential Early Career Award (PECASE) in 2009 and an NSF CAREER Award in 2008, and is an APS Fellow and AIAA Associate Fellow. She currently serves as editor-in-chief of Experimental Thermal and Fluid Science and on the editorial boards of the AIAA J., Annual Review of Fluid Mechanics, Experiments in Fluids and Physics Review Fluids. She is the APS representative to the US National Committee on Theoretical and Applied Mechanics.

Attendance

To ensure that your attendance at the event is properly recorded in your IIT Engineering Themes Portfolio, please take a photo of the speaker and a "selfie" at the event and email it to engineering@iit.edu including your A# and the name of the event in the email.


Earn Engineering Themes credit in ENERGY for attending.