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 - Publisher Copyright: © 2014 American Physical Society.
PY - 2014/12/17
Y1 - 2014/12/17
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.
UR - http://www.scopus.com/inward/record.url?scp=84919742410&partnerID=8YFLogxK
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
M1 - 254503
ER -