Selective decay and coherent vortices in two-dimensional incompressible turbulence
Matthaeus, W., Stribling, W., Martinez, D., Oughton, S., & Montgomery, D. (1991). Selective decay and coherent vortices in two-dimensional incompressible turbulence. Physical Review Letters, 66(21), 2731â 2734. doi:10.1103/physrevlett.66.2731
Permanent Research Commons link: https://hdl.handle.net/10289/8626
Numerical solution of two-dimensional incompressible hydrodynamics shows that states of a near-minimal ratio of enstrophy to energy can be attained in times short compared with the flow decay time, confirming the simplest turbulent selective decay conjecture, and suggesting that coherent vortex structures do not terminate nonlinear processes. After all possible vortex mergers occur, the vorticity attains a particlelike character, suggested by the late-time similarity of the streamlines to Ewald potential contours.
American Physical Society
© 1991 The American Physical Society.