On the triad transfer analysis of plasma turbulence: symmetrization, coarse graining, and directional representation

On the triad transfer analysis of plasma turbulence: symmetrization, coarse graining, and directional representation
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等离子体湍流的三重传递分析:对称化、粗粒化和方向表示

DOI:
10.1088/1367-2630/abeffc
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发表时间:
2021
影响因子:
3.3
通讯作者:
Inagaki Shigeru
Inagaki Shigeru
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Maeyama Shinya;Sasaki Makoto;Fujii Keisuke;Kobayashi Tatsuya;Dendy Richard O;Kawachi Yuichi;Arakawa Hiroyuki;Inagaki Shigeru

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本文讨论了通过二次非线性进行三和弦转移分析。为了避免虚拟的相互作用,对称化的三元组转移,包括任意正交分解和粗粒化。在保持能量一致性的前提下,通过最小化三元组相互作用网络图中的边数,提出了对称化三元组转移的方向表示。方向表示简化了可视化,使我们能够减少到一对一的关系的能量传递,同时消除虚构的相互作用,在非对称的三元组传递函数。作为应用,分析了奇异值分解分解后的等离子体湍流涨落之间的能量传递过程。一个网络图可视化清楚地表明了对称化的重要性和对称化的三元组转移及其方向表示之间的一致性。
This article discusses triad transfer analysis via quadratic nonlinearity. To avoid fictitious interactions, symmetrization of the triad transfer is reviewed, including arbitrary orthogonal decomposition and coarse graining. The directional representation of the symmetrized triad transfer is proposed by minimizing the number of edges in a network graph of triad interactions with keeping the energy consistency. The directional representation simplifies visualization and allows us to reduce the energy transfer into a one-to-one relation, while eliminating fictitious interactions in non-symmetrized triad transfer functions. Energy transfer processes among plasma turbulent fluctuations that decompose by the singular value decomposition are analyzed as an application. A network graph visualization clearly demonstrates the importance of symmetrization and the consistency between the symmetrized triad transfer and its directional representation.
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影响因子: 8.6
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