The effects of finite lifetime of passive scalars and vorticity on their power spectra

Keeyeol Nam, Thomas M Antonsen, Parvez N Guzdar and Edward Ott

Physica A: Statistical Mechanics and its Applications, 2000, vol. 288, issue 1, 265-279

Abstract: The power law exponent for the wavenumber power spectrum of a passive scalar field with finite lifetime in Lagrangian chaotic flows and the enstrophy spectrum of two-dimensional Navier–Stokes turbulence with drag are investigated. The power law exponents are related to the distribution of finite-time Lyapunov exponents and the finite lifetime (or the drag coefficient).

Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:288:y:2000:i:1:p:265-279

DOI: 10.1016/S0378-4371(00)00426-X

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