Interface dimension in intermittent turbulence.

Interface dimension in intermittent turbulence.
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DOI:
10.1103/physreva.41.2246
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发表时间:
1990-02
期刊:
Physical review. A, Atomic, molecular, and optical physics
影响因子:
--
通讯作者:
Meneveau;Sreenivasan
Meneveau;Sreenivasan
中科院分区:
其他
文献类型:
--
作者:
Meneveau;Sreenivasan

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我们详细阐述了在Sreenivesan,Ramshankar和Meneveau[Proc.R.Soc.伦敦爵士。A 421,79()],解释了界面的普遍分维接近(7/3)的观测结果。在这里,我们显式地考虑了柯尔莫戈洛夫标度中的局部涨落(由于耗散率的多重分形性)对表面积的影响。由此得到的维度被证明等同于一个涉及界面粗粒化的简单自变量的预测。
We elaborate on a result obtained in Sreenivasan, Ramshankar, and Meneveau [Proc. R. Soc. London Ser. A 421, 79 (1989)] which explains the observations of a universal fractal dimension of interfaces close to (7/3. Here we explicitly take into account the influence of local fluctuations in the Kolmogorov scale (due to the multifractal nature of the rate of dissipation) on the surface area. The resulting dimension is shown to be equivalent to the prediction of a simple argument involving coarse graining of the interface.