Skip to content Skip to navigation

Tea Seminar

Turbulence in a microchannel

Event Type: 
Tea Seminar
Date and Time: 
Friday, March 2, 2018 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Professor V. Kumaran
Abstract: 

It is well known that the transition from a laminar to a turbulent flow takes place in a rigid tube takes place at a Reynolds number of about 2100, and in a rigid channel at a Reynolds number of about 1200.

Eigenspace-based characterization of structural uncertainty in large-eddy simulation closure models

Event Type: 
Tea Seminar
Date and Time: 
Friday, February 23, 2018 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Lluis Jofre-Cruanyes
Abstract: 

Large-eddy simulation (LES) has gained significant importance as a high-fidelity technique for the numerical resolution of complex turbulent flow.

A combined volume-of-fluid method and low-Mach-number approach for DNS of evaporating droplets in turbulence

Event Type: 
Tea Seminar
Date and Time: 
Friday, February 9, 2018 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Michael S. Dodd
Abstract: 

A set of governing equations to describe gas-liquid flows with phase change in the low Mach number limit will be presented.

Direct numerical simulation of a turbulent boundary layer with separation and reattachment over a wide range of Reynolds numbers

Event Type: 
Tea Seminar
Date and Time: 
Friday, November 10, 2017 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Hiroyuki Abe
Abstract: 

Separation and reattachment of a turbulent boundary layer are crucial issues in aeronautical and engineering applications since they are associated with upper bound of efficiency for the devices.

Optimal Spectral Approximation Methods for Parameterized PDEs with Application to Flow Problems

Event Type: 
Tea Seminar
Date and Time: 
Friday, November 3, 2017 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Kookjin Lee
Abstract: 

We consider the numerical solution of parameterized linear systems where the system matrix, the solution, and the right-hand side are parameterized by a set of uncertain input parameters. We explore spectral methods in which the solutions are approximated in a chosen finite-dimensional subspace.

Detailed modeling of radiative heat transfer in combustion systems

Event Type: 
Tea Seminar
Date and Time: 
Friday, October 20, 2017 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Xinyu Zhao
Abstract: 

Radiative heat transfer process in combustion systems has received relatively little attention to date. Recently, it starts to generate increasing interest given the current trends of engine designs for both internal combustion engines and aeronautical engines.

Modeling velocity gradients along particle trajectories in turbulence

Event Type: 
Tea Seminar
Date and Time: 
Friday, September 29, 2017 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Perry Johnson
Abstract: 

The dynamics of velocity gradients in turbulent flows not only represent an attractive way to explore theoretical issues such as intermittency, but also prove important for a number of micro-physical processes that occur in turbulent environments.

Transition to turbulence in wall-bounded shear Flows

Event Type: 
Tea Seminar
Date and Time: 
Friday, September 22, 2017 - 4:30pm
Location: 
CTR Conference Room 103
Speaker(s): 
Dr. Michael Karp
Abstract: 

In this talk several aspects of transition to turbulence in wall-bounded shear flows are addressed. One aspect discusses the formation and evolution of coherent structures, such as counter-rotating vortex pairs (CVPs) and hairpins, observed in various transitional as well as turbulent flows.

Pages

Subscribe to Tea Seminar