Generalized fractal dimension for a dissipative multi-fractal cascade model for fully developed turbulence

Bhimsen Shivamoggi, Michael Undieme,Zoe Barbeau, Angela Colbert

Physica A: Statistical Mechanics and its Applications(2022)

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摘要
In this paper, we explore a variant for the simple model based on a binomial multiplicative process of Meneveau and Sreenivasan (1987) that mimics the multi-fractal nature of the energy dissipation field in the inertial range of fully developed turbulence (FDT), and uses the generalized fractal dimension (GFD) prescription of Hentschel and Proccacia (1983), Halsey et al. (1986). However, the presence of an even infinitesimal dissipation in the inertial range is shown to lead to a singularity in the GFD Dq (at q=1) of the energy dissipation field and leads to a breakdown of the Meneveau and Sreenivasan (1987) binomial multiplicative formulation for a dissipative inertial cascade. The purpose of this paper is to demonstrate that this can be resolved by introducing a new appropriate ansatz for the definition of the GFD Dq to incorporate the effect of a scale-invariant dissipation via a phenomenological dissipative parameter K(0更多
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关键词
Generalized fractal dimension,Multi-fractals,Turbulence,Dissipative cascade,Intermittency,Fluid flows
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