The energy cascade in grid-generated non-equilibrium decaying turbulence
نویسندگان
چکیده
منابع مشابه
Energy spectrum of grid-generated He II turbulence.
A grid of bars towed through a sample of He II produces both superfluid turbulence and classical hydrodynamic turbulence. The two velocity fields-in the normal fluid and in the superfluid-have been observed to have the same energy spectral density over a large range of scales. Here, we introduce a characteristic scale l(q)=2 pi(epsilon/kappa(3))(-1/4), where epsilon is the rate of turbulent ene...
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Rotating grid turbulence experiments have been carried out in a stably stratified fluid for relatively large Reynolds numbers (mesh Reynolds numbers up to 18 000). Under the combined effects of rotation and stratification the flow degenerates into quasihorizontal motions. This regime is investigated using a scanning imaging velocimetry technique which provides time-resolved velocity fields in a...
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Christophe Josserand, Martine Le Berre, Thierry Lehner and Yves Pomeau 1 Sorbonne Universités, CNRS & UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d’Alembert, F-75005, Paris, France. 2 Institut des Sciences Moléculaires d’Orsay ISMO-CNRS Université Paris-Sud Bat. 210 91405 Orsay Cedex, France. 3 Observatoire de Paris, LUTH, France. 4 Department of Mathematics University of ArizonaTucson ...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2015
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.4916628