Cylinder wake flow
A near-field cylinder wake is investigated using the particle image velocimetry technique for an inflow Mach number spanning 0.3 – 2. The mean flow and turbulent kinetic energy field for different Mach number cases are investigated. The wake for the supersonic inflow cases was found to be an order of magnitude smaller physically than the subsonic cases with an identical cylinder diameter. Furthermore, the swirl strength criterion is used to identify the eddies present within the wake and the eddy size and convection velocity are characterised based on the spatio-temporal correlations. The result suggests that the interaction of eddies generated at the top and bottom surface of the cylinder leads to the large-scale features present in the wake, and that the differing paths followed by the eddies between the sub- and supersonic cases are responsible for the variation in the observed wake width.
Cooperations:
- N.N.
Person In charge:
- Dr. Rio Baidya
- Dr. Sven Scharnowski
Funder:
- DAAD