小尺度非螺旋力驱动下旋转层状湿润大气的水动力α-效应

IF 1.1 4区地球科学 Q3 ASTRONOMY & ASTROPHYSICS

Geophysical and Astrophysical Fluid Dynamics Pub Date : 2021-09-17 DOI:10.1080/03091929.2021.1946802

M. Kopp, A. Tur, V. Yanovsky

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引用次数: 1

摘要

本文研究了具有小尺度湍流的旋转层状湿润大气中的大尺度不稳定性。介质的旋转轴偏离垂直方向。湍流是由一个低雷诺数、零螺旋度的小尺度外力激发的。基于多尺度渐近展开方法，得到了涡发电机的非线性方程。研究了系统的线性失稳和平稳非线性模态。得到了局部涡旋结构形式的解。

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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Hydrodynamic α-effect in a rotating stratified moist atmosphere driven by small-scale non-helical force

In this paper we have studied the large-scale instability in a rotating stratified moist atmosphere with a small-scale turbulence. The axis of rotation of the medium is deviated from the vertical direction. The turbulence is excited by an external small-scale force with zero helicity and a low Reynolds number. The nonlinear equations of a vortex dynamo were obtained on the basis of the method of multiscale asymptotic expansions. The linear instability and stationary nonlinear modes were studied. The solutions in a form of localized vortex structures were obtained.

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来源期刊

Geophysical and Astrophysical Fluid Dynamics 地学天文-地球化学与地球物理

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Geophysical and Astrophysical Fluid Dynamics exists for the publication of original research papers and short communications, occasional survey articles and conference reports on the fluid mechanics of the earth and planets, including oceans, atmospheres and interiors, and the fluid mechanics of the sun, stars and other astrophysical objects. In addition, their magnetohydrodynamic behaviours are investigated. Experimental, theoretical and numerical studies of rotating, stratified and convecting fluids of general interest to geophysicists and astrophysicists appear. Properly interpreted observational results are also published.