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gfdl's home page > gfdl on-line bibliography > 1994: Chaos, Solitons, and Fractals, 4(6), 1111-1116
Spectra of local and nonlocal two-dimensional turbulence
| Pierrehumbert, R. T., I. M. Held, and K. L. Swanson,1994: Spectra of local and nonlocal two-dimensional turbulence. Chaos, Solitons, and Fractals, 4(6), 1111-1116. |
| Abstract: We propose a family of two-dimensional incompressible fluid models indexed by a parameter a e [0, infinity], and discuss the spectral scaling properties for homogenous, isotropic turbulence in these models. The family includes two physically realizable members. It is shown that the enstrophy cascade is spectrally local for a < 2, but becomes dominated by nonlocal interactions for a > 2. Numerical simulations indicate that the spectral slopes are systematically steeper than those predicted by the local scaling argument. |