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首页> 外文期刊>Geophysical Research Letters >Generalized two-scale weighted Cantor set model for solar wind turbulence
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Generalized two-scale weighted Cantor set model for solar wind turbulence

机译:太阳风湍流的广义两尺度加权Cantor集模型

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摘要

In order to quantify the multifractality of solar wind turbulence, we consider a generalized weighted Cantor set with two different scales describing nonuniform compression of cascading eddies. We investigate the resulting multifractal spectrum of generalized dimensions depending on two scaling parameters and one probability measure parameter, especially for asymmetric scaling. In particular, we show that intermittent pulses are stronger for the model with two different scaling parameters and a much better agreement with the solar wind data is obtained, especially for the negative index of the generalized dimensions. Therefore we argue that there is a need to use a two-scale cascade model. Hence we propose this new more general model as a useful tool for analysis of intermittent turbulence in various environments.
机译:为了量化太阳风湍流的多重分形性,我们考虑了广义加权Cantor集,该集具有两个不同的比例,描述级联涡旋的非均匀压缩。我们研究了取决于两个缩放参数和一个概率测量参数的广义维数的多重分形谱,特别是对于不对称缩放。特别地,我们表明,对于具有两个不同缩放参数的模型,间歇脉冲更强,并且与太阳风数据获得了更好的一致性,尤其是对于广义尺寸的负指数而言。因此,我们认为有必要使用两尺度级联模型。因此,我们提出了这种新的更通用的模型,作为分析各种环境中间歇性湍流的有用工具。

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