Growth of helicity in salt-finger convection in the two-dimensional three-component limit.

IF 2.5 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review E Pub Date : 2026-08-01 DOI:10.1103/rrcr-h8l9

Smiron Varghese, Benjamin Miquel, Wouter J T Bos

引用次数: 0

Abstract

We present an analytical investigation of the global helicity budget associated with the salt-fingering instability within the two-dimensional, three-component framework. Our analysis shows that in the region of parameter space corresponding to salt fingering, helicity amplification occurs when the Rayleigh ratio-quantifying the relative strength of salinity to temperature gradients-exceeds a critical threshold. This finding provides a possible theoretical explanation for the spontaneous emergence of helicity, observed in recent numerical simulations.

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二维三分量极限下盐指对流螺旋度的增长。

我们提出了与盐指不稳定性在二维，三组分框架内的全球螺旋预算的分析调查。我们的分析表明，在盐指法对应的参数空间区域，当瑞利比（量化盐度与温度梯度的相对强度）超过临界阈值时，螺旋度就会放大。这一发现为在最近的数值模拟中观察到的螺旋度的自发出现提供了可能的理论解释。

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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来源期刊

Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL

CiteScore

4.50

自引率

16.70%

发文量

2110

期刊介绍： Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.