Large-scale bottleneck effect in two-dimensional turbulence - Physics > Fluid DynamicsReport as inadecuate




Large-scale bottleneck effect in two-dimensional turbulence - Physics > Fluid Dynamics - Download this document for free, or read online. Document in PDF available to download.

Abstract: The bottleneck phenomenon in three-dimensional turbulence is generallyassociated with the dissipation range of the energy spectrum. In the presentwork, it is shown by using a two-point closure theory, that in two-dimensionalturbulence it is possible to observe a bottleneck at the large scales, due tothe effect of friction on the inverse energy cascade. This large-scalebottleneck is directly related to the process of energy condensation, thepile-up of energy at wavenumbers corresponding to the domain size. The linkbetween the use of friction and the creation of space-filling structures isdiscussed and it is concluded that the careless use of hypofriction mightreduce the inertial range of the energy spectrum.



Author: Wouter J.T. Bos LMFA, Jean-Pierre Bertoglio LMFA

Source: https://arxiv.org/







Related documents