Designing aerodynamically stable jet engines: what you need to know

Fanny Besem
Friday, March 20, 2015 - 11:45am
Hudson 208
Seminar Contact(s): 
Daniel Real, daniel.real@duke.edu
Semester & Year: 
Spring 2015

 

Designing aerodynamically stable jet engines: what you need to know


Fanny Besem

Abstract

Seminar abstract

One of the grand challenges faced by the aeronautics and gas turbines industries is the accurate prediction of aeromechanics incidents that can cause failure of the engine or turbine. During the last decades, the development of flow simulations (called “computational fluid dynamics”) has allowed the design of complex components while reducing the need for expensive engine testing. However, the validation of the numerical results with experimental data is very incomplete and the predictions are often different from the experimental data by 50% or more. 

 

This talk will walk you from understanding how jet engines work to realizing the limitations of computational fluid dynamics (or “CFD”) and the main inaccuracies overlooked by industry. By the end of the talk, you will have learned why CFD is both useful and unreliable, and what factors play a role in the bad numerical predictions.

 

Biography

Seminar speaker

Fanny Besem is a fifth year graduate student working with Dr. Robert Kielb on aeroelastic instabilities due to unsteady aerodynamics. Born and raised in Belgium, she took part in the first year of the THRUST program, an international Master’s program at the frontier between research and industry. After graduation, she decided to stay at Duke and pursue a Ph.D. in aeroelasticity. Since 2013, she has been working on improving forced response predictions in high-speed compressors in collaboration with Purdue University. She will be defending her dissertation on Monday.