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Direct Numerical Simulations of Two-dimensional Turbulence

Project Turbo2D
Research Area Physics, Fluid turbulence
Principal Investigator(s) Guido Boffetta
Institution(s)
  • Dip. Fisica Generale, University of Torino, Italy
  • Institut Non Lineaire de Nice – CNRS, France
  • Dip. di Fisica, University of Genova, Italy
  • Laboratoire de Physique Theorique, ENS, France

Abstract

The motion of a fluid in two dimensions is a good approximation of the large scale dynamics in the atmosphere and ocean. From a theoretical point of view, two-dimensional turbulence is one of the archetypal models of non-equilibrium statistical systems. Despite its importance, a clear confirmation of the theory of 2D turbulence, proposed 40 years ago, is still lacking. This has spurred a controversy about the ultimate fate of the turbulent cascades in two dimensions. The main objective of the present proposal is the long awaited confirmation of the double cascade scenario by means of DNS at unprecedented resolution (65536x65563) which will allow to resolve simultaneously the two cascades.

 

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