Flow instability analysis plays an active role in the identification and explanation of some of the most challenging topics of fluid mechanics. Its application in cases of industrial interest ranges from re-entry vehicles, to detached flows, up to aeroacoustic interactions and drag reduction for air vehicles. The number different techniques available nowadays for modeling, prediction and measurement of such a phenomenon has vastly increased, offering unprecedented opportunities for the advancement of fluid dynamics understanding and its use in industrial design.

The course will introduce several aspects of the stability theory dealing with different phenomena and scenarios. Lectures will range from traditional linear stability method to parabolized stability equations and global stability. Moreover they will address compressible and incompressible flows stability in laminar and turbulent regimes, describing theoretical foundations, numerical methods and applications.

The directors of this VKI Lecture Series are Professor Eusebio Valero from Universidad Politécnica de Madrid and Dr. Fabio Pinna of the von Karman Institute.

SCHEDULE

Monday, 23 October 2017
Theoretical

• 08:30 Registration and Welcome Address
• 09:00 Introduction to stability problems, path to transition
  Professor Helen Reed, Texas A&M University, United States
• 10:30 Coffee break
• 11:00 Absolute and convective instability
  Professor Matthew Juniper, Cambridge University, United Kingdom
• 12:30 Lunch
• 14:00 Non modal stability
  Professor Peter Schmid, Imperial College London, United Kingdom
• 15:30 Coffee break
• 15:45 Sensitivity and receptivity
  Professor Helen Reed
• 17:00 Welcome drink

Tuesday, 24 October 2017
Numerical

• 09:00 Numerical methods (DNS/LES)
  Professor Eusebio Valero, Universidad Politécnica de Madrid (UPM), Spain
• 10:30 Coffee break
• 11:00 Linear stability theory
  Professor Peter Schmid
• 12:30 Lunch
• 14:00 Parabolized Stability Equations
  Dr.-Ing. Stefan Hein, Deutschen Zentrums für Luft- und Raumfahrt (DLR), Germany
• 15:30 Coffee break
• 15:45 BiGlobal stability equations
  Professor Eusebio Valero

Wednesday, 25 October 2017
Experimental

• 09:00 Design of the wind tunnel
  Professor Guillermo Paniagua, Perdue University, IN, United States
• 10:30 Coffee break
• 11:00 Experimental techniques, processing and uncertainty
  Professor Guillermo Paniagua
• 12:30 Lunch
• 14:00 Visit of the laboratories
• 15:15 Coffee break
• 15:30 Measurements in hypersonic flows
  Dr. Guillaume Grossir and Dr. Davide Masutti, von Karman Institute for Fluid Dynamics, Belgium
• 17:00 End of the Lecture Series