TY - JOUR
T1 - Universal Profile of the Vortex Condensate in Two-Dimensional Turbulence
AU - Laurie, Jason
AU - Boffetta, Guido
AU - Falkovich, Gregory
AU - Kolokolov, Igor
AU - Lebedev, Vladimir
N1 - HPC-EUROPA2 Project [228398]; BSF; Minerva Foundation; Russian Scientific Fund [14-22-00259]This work was supported by the HPC-EUROPA2 Project No. 228398 and the grants of the BSF and the Minerva Foundation. The analytical part of this work was also supported by the Russian Scientific Fund, Grant No. 14-22-00259.
PY - 2014/12
Y1 - 2014/12
N2 - An inverse turbulent cascade in a restricted two-dimensional periodic domain creates a condensate-a pair of coherent system-size vortices. We perform extensive numerical simulations of this system and carry out theoretical analysis based on momentum and energy exchanges between the turbulence and the vortices. We show that the vortices have a universal internal structure independent of the type of small-scale dissipation, small-scale forcing, and boundary conditions. The theory predicts not only the vortex inner region profile, but also the amplitude, which both perfectly agree with the numerical data.
AB - An inverse turbulent cascade in a restricted two-dimensional periodic domain creates a condensate-a pair of coherent system-size vortices. We perform extensive numerical simulations of this system and carry out theoretical analysis based on momentum and energy exchanges between the turbulence and the vortices. We show that the vortices have a universal internal structure independent of the type of small-scale dissipation, small-scale forcing, and boundary conditions. The theory predicts not only the vortex inner region profile, but also the amplitude, which both perfectly agree with the numerical data.
U2 - https://doi.org/10.1103/PhysRevLett.113.254503
DO - https://doi.org/10.1103/PhysRevLett.113.254503
M3 - مقالة
SN - 0031-9007
VL - 113
JO - Physical review letters
JF - Physical review letters
IS - 25
ER -