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CTR Tea

High-Fidelity Simulation, Active Flow Control and Reduced Order Modeling of a Plunging Airfoil under Deep Dynamic Stall

Event Type: 
CTR Tea
Date and Time: 
Friday, August 2, 2019 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Professor William R. Wolf
Abstract: 

Unsteady flows over plunging and pitching airfoils with large excursions in effective angle of attack exhibit the phenomenon of dynamic stall.

Towards sensitivity analysis on turbulence via shadowing methods

Event Type: 
CTR Tea
Date and Time: 
Friday, May 24, 2019 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Mr. Angxiu Ni
Abstract: 

Turbulence is an important example of chaotic dynamical systems, and sensitivity analysis is a powerful tool for design via computation.  However, traditional sensitivity methods explode for chaotic systems, posing the challenge we will address in this talk.  We first review how to compute meanin

Big data vs big computation

Event Type: 
CTR Tea
Date and Time: 
Friday, April 26, 2019 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
ICME / CTR Visiting Associate Professor Qiqi Wang
Abstract: 

What is the future of computing? Some believe it's big data. For others, it's big computation. Supporters of big data believe that most problems can be solved by gathering huge amounts of data and applying machine learning.

Acoustic boundary conditions for high-fidelity simulations of combustion instabilities

Event Type: 
CTR Tea
Date and Time: 
Friday, March 15, 2019 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Quentin Douasbin
Abstract: 

Combustion devices are prone to combustion instabilities (CIs). They classically occur when heat release rate oscillations and acoustic fluctuations become coherent, creating constructive interferences.

Information transfer in energy-eddies of different sizes and why this is useful

Event Type: 
CTR Tea
Date and Time: 
Friday, February 15, 2019 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Adrián Lozano-Durán
Abstract: 

Turbulent flows in the presence of bounding surfaces, as those occurring in oceanic and atmospheric currents, around vehicles, or inside pipes, may be apprehended as a collection of whirls or eddies.

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