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Anisotropic spectra of acoustic type turbulence

Abstract : The problem of spectra for acoustic type of turbulence generated by shocks being randomly distributed in space is considered. It is shown that for turbulence with a weak anisotropy, such spectra have the same dependence in k-space as the Kadomtsev–Petviashvili spectrum: E(k)∼k−2. However, the frequency spectrum has always the falling ∼ω−2, independent of anisotropy. In the strong anisotropic case the energy distribution relative to wave vectors takes anisotropic dependence, forming in the large-k region spectra of the jet type
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E. Kuznetsov, Vladimir Krasnoselskikh. Anisotropic spectra of acoustic type turbulence. Physics of Plasmas, American Institute of Physics, 2008, 15 (6), pp.062305. ⟨10.1063/1.2928160⟩. ⟨insu-02928491⟩

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