Characteristics of the interfaces in a turbulent boundary layer

Characteristics of the interfaces in a turbulent boundary layer: Extended abstract

Eisma, H.E. (TU Delft Fluid Mechanics)
Elsinga, G.E. (TU Delft Fluid Mechanics)
Westerweel, J. (TU Delft Fluid Mechanics)

2013

Interfaces are commonly observed features of turbulent flows. Previous research has indicated the significance of these interfaces on the overall dynamics of the turbulent flow [1]. The current research focuses on both the external Turbulent/Non-Turbulent (T/NT) interface as well as internal layers that are present in an experimentally determined Turbulent Boundary Layer (TBL). Experiments are performed using planar Particle Image Velocimetry (PIV). First of all, attention is paid to the method of determining the interfaces. Furthermore, a quantitative comparison with jet data from [2] is made. Third, the properties of the internal interfaces are compared with the T/NT interface. Finally, the entrainment velocities of the interfaces are derived from the experimental results, which may be indicative of the growth rate of the TBL [1].

http://resolver.tudelft.nl/uuid:d3c77e0e-19f2-4b7c-8584-e7c0e035fa36

Zakon Group

Proceedings ot the 14th European Turbulence Conference

14th European Turbulence Conference, ETC 2013, 2013-09-01 → 2013-09-04, Lyon, France

Institutional Repository

conference paper

© 2013 H.E. Eisma, G.E. Elsinga, J. Westerweel