The Lagrangian exploration module: an apparatus for the study of statistically homogeneous and isotropic turbulence.
We present an apparatus that generates statistically homogeneous and isotropic turbulence with a mean flow that is less than 10% of the fluctuating velocity in a volume of the size of the integral length scale. The apparatus is shaped as an icosahedron where at each of the 12 vertices the flow is driven by independently controlled propellers. By adjusting the driving of the different propellers the isotropy and homogeneity of the flow can be tuned, while keeping the mean flow weak.
Zimmermann
Robert
R
Max Planck Institute for Dynamics and Self-Organization, Göttingen D-37077, Germany.
Xu
Haitao
H
Gasteuil
Yoann
Y
Bourgoin
Mickaël
M
Volk
Romain
R
Pinton
Jean-François
JF
Bodenschatz
Eberhard
E