European Turbulence Conference 14

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Energy transfer in stratified turbulence

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We investigate the mechanisms of transfer of kinetic and potential energy in stably stratified turbulent flows. By means of high-resolution direct numerical simulations and theoretical analysis of the Karman-Howarth-Monin relations we show that increasing the stratification the transfer of energy in the vertical direction is suppressed and a joint forward cascade of kinetic and potential energy develops.

Author(s):

Stefano Musacchio    
Laboratoire J.A. Dieudonne', CNRS
France

Guido Boffetta    
Dipartimento di Fisica and INFN, Universita` di Torino
Italy

Paolo Muratore-Ginanneschi    
Department of Mathematics and Statistics, University of Helsinki
Finland

 

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