The Lagrangian exploration module: An apparatus for the study of statistically homogeneous and isotropic turbulence

Robert Zimmermann, Haitao Xu, Yoann Gasteuil, Mickaël Bourgoin, Romain Volk, Jean-François Pinton, Eberhard Bodenschatz
2010 Review of Scientific Instruments  
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.
doi:10.1063/1.3428738 pmid:20515177 fatcat:pw6xt2z2ufes5kq6sps6ti3jvq