Some observations of bispectral behavior of large ensembles of exact solutions to the Burgers equation for random initial conditions.

Autor: Zheng, Weiguo, Reed, X. B.
Předmět:
Zdroj: Physics of Fluids A; Apr92, Vol. 4 Issue 4, p845, 4p
Abstrakt: Accurate bispectra for the Burgers equation have been computed into the high wave-number domain. Although only the imaginary part ib(k,l) contributes to spectral transfer, new insights having implications for three-dimensional turbulence can be gained by incorporating the real part a(k,l). For fixed l, for instance, the modulus of the bispectrum of the Burgers equation manifests a power-law subrange corresponding to the inertial subrange of the energy spectrum and an exponential subrange corresponding to the viscous cutoff of the energy spectrum. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index