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CTR Tea

At last, Turbulence closure modeling minus tuning parameters!

Event Type: 
CTR Tea
Date and Time: 
Friday, January 22, 2021 - 4:30am
Location: 
Zoom
Speaker(s): 
Prof. Parviz Moin
Abstract: 

In the immediate aftermath of the 1990 Summer Program, there was a flurry of activities at CTR seeking to exploit the dynamic modeling concept in canonical turbulent flows which heretofore had challenged the universality of turbulence models.

A model is born

Event Type: 
CTR Tea
Date and Time: 
Friday, January 15, 2021 - 4:30pm
Location: 
Zoom
Speaker(s): 
Prof. Ugo Piomelli
Abstract: 

It was a sunny morning in July 1990, the first week of the CTR Summer Program, Massimo Germano, Parviz Moin, Bill Cabot and Ugo Piomelli met to discuss the possible uses of an identity that Massimo Germano had recently derived.

Flow and Ignition Dynamics Following Laser-induced Breakdowns

Event Type: 
CTR Tea
Date and Time: 
Friday, November 20, 2020 - 4:30pm
Location: 
Zoom
Speaker(s): 
Dr. Jonathan Wang
Abstract: 

Laser-induced breakdown is a versatile means of depositing energy in a fluid and a promising alternative to conventional electrode-spark ignition for combustion systems.  Using numerical simulations we analyze the flow dynamics following the laser pulse and show that it is sensitive to even subtl

Investigation of direct combustion noise in turbulent premixed jet flames using DNS

Event Type: 
CTR Tea
Date and Time: 
Friday, November 6, 2020 - 4:30pm
Location: 
Zoom
Speaker(s): 
Dr. Davy Brouzet
Abstract: 

Direct combustion noise plays a key role in the triggering and dynamics of thermo-acoustic instabilities of modern gas turbines. Moreover, many combustion devices can produce high levels of noise, while being subjected to stringent noise regulations.

Transcritical diffuse-interface hydrodynamics of propellants in high-pressure combustors of chemical propulsion systems

Event Type: 
CTR Tea
Date and Time: 
Friday, October 23, 2020 - 4:30am
Location: 
Zoom
Speaker(s): 
Dr. Javier Urzay
Abstract: 

Rocket engines and high-power new generations of jet engines and diesel engines oftentimes involve the injection of one or more reactants at subcritical temperatures into combustor environments at high pressures, and more particularly at pressures higher than those corresponding to the critical p

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