Experimental Lagrangian structure functions in turbulence
Fluid Dynamics
2015-05-13 v2
Abstract
Lagrangian properties obtained from a Particle Tracking Velocimetry experiment in a turbulent flow at intermediate Reynolds number are presented. Accurate sampling of particle trajectories is essential in order to obtain the Lagrangian structure functions and to measure intermittency at small temporal scales. The finiteness of the measurement volume can bias the results significantly. We present a robust way to overcome this obstacle. Despite no fully developed inertial range we observe strong intermittency at the scale of dissipation. The multifractal model is only partially able to reproduce the results.
Cite
@article{arxiv.0903.2633,
title = {Experimental Lagrangian structure functions in turbulence},
author = {Jacob Berg and Soren Ott and Jakob Mann and Beat Luthi},
journal= {arXiv preprint arXiv:0903.2633},
year = {2015}
}
Comments
12 pages (two column format). This is version two of the paper. Notice that the title has changed