High-resolution numerical experiments, described in this work, show that velocity fluctuations governed by the one-dimensional Burgers equation driven by a white-in-time random noise with the spectrum (k) ^2k^-1 exhibit a biscaling behavior: All moments of velocity differences S₍₃ (r) = (x+r) -u (x) ^n^n r^n/3, while S₍>₃ (r) r₍^ with ₍1 for real n>0 Chekhlov and Yakhot, Phys. Rev. E 51, R2739 (1995). The probability density function, which is dominated by coherent shocks in the interval 0, is scrP (, r) () ^-q with q4. A phenomenological theory describing the experimental findings is presented.
Chekhlov et al. (Wed,) studied this question.
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