Turbulent Shear Flows

Transonic Turbulent Shear Flows

In this project different kinds of Particle Image Velocimetry (PIV) methods are enhanced for the application in the transonic and hypersonic flow range. The objective is to generate the needed experimental data basis in order to answer the fundamental question - Is it possible to establish a physically sound computation method for unsteady wake flows with and without a jet? The data basis is supposed to characterize the behaviour of the vortex structures in the wake of a generic rocket body (Ariane 5 demonstrator) as well as their interaction with the nozzle and the shear layer. Both the Multiplane PIV technique for time-resolved velocity measurements in high speed flows and the long range microscopic PIV technique for the resolution of hypersonic boundary layers are well established for such measurement tasks and are used for flow analysis along with short exposure Schlieren images, pressure measurements, and heat transfer measurements


Funded by the Deutsche Forschungsgemeinschaft (DFG-TR40).


Partner: TU Braunschweig (Prof. Radespiel), DLR Köln (Dr. Gülhan),
             RWTH Aachen (Prof. Schröder)


Contacts: Dipl.-Phys. Sven Scharnowski