Dynamics of turbulence in a jet and the effect of swirl
Event details
| Date | 16.05.2011 |
| Hour | 11:00 |
| Speaker | Samuel Davoust, ONERA, France |
| Location |
MEB10
|
| Category | Conferences - Seminars |
Jets represent an important class of turbulent flows with wide applications, from
aircraft propulsion to mixing and combustion. In the first part of this experimental
study, we use high-speed Particle Image Velocimetry to describe the organization and
the dynamics of the largest scales of turbulence near the exit of a high Reynolds
number jet. From our observations, we propose a scenario on the interaction of m=0,
m=1 modes with streamwise vortices. In a second part, we focus on the changes that
occur when moderate swirl is imposed, i.e. when a rotation component is added to
the jet exit velocity. We detail and interpret the evolutions in the jet’s mean flow,
turbulence statistics and large scale structures.
Links
Practical information
- General public
- Free
Contact
- François Gallaire