论无磁性天体盘螺旋湍流中的反向能量级联理论

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Solar System Research Pub Date : 2024-03-21 DOI:10.1134/S0038094623070080

A. V. Kolesnichenko

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引用次数: 0

摘要

摘要本文研究了旋转盘中出现的流体动力螺旋对宇宙物质的协同结构和负湍流粘度效应的影响的可能性。研究表明，圆盘中长时间的湍流阻尼与各向异性的湍流速度场相对于其赤道面缺乏反射对称性有部分关系。研究表明，旋转圆盘系统中的负粘度显然是螺旋湍流中级联过程的一种表现形式，此时会发生从小旋涡向大旋涡的反向能量转移。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the Theory of an Inverse Energy Cascade in Helical Turbulence of a Nonmagnetic Astrophysical Disk

In this article, the possibility of influence of the hydrodynamic helicity appearing in a rotating disk on synergetic structuring of cosmic substance and on the emergence of the negative turbulent viscosity effect in it is investigated. It is shown that prolonged turbulence damping in a disk can be partly associated with the absence of reflection symmetry of the anisotropic field of turbulent velocities relative to its equatorial plane. It is shown that negative viscosity in the rotating disk system is apparently a manifestation of cascade processes in helical turbulence, when the inverse energy transfer from small to larger vortices occurs.

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来源期刊

Solar System Research 地学天文-天文与天体物理

CiteScore

1.60

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.