从孤波到行浪

Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-09-20 DOI:10.1360/YA1995-38-9-1145

Song Liting

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引用次数: 0

摘要

在异常阻力作用下，动态Alfven波的解有两个分支:慢波VPVA cost θ演化为静止的Alfven行浪涌结构，快波VPVA cost θ演化为破波状态。这种行浪涌结构是一种典型的自组织现象，其波形由表示电阻大小的参数β决定。高β导致激波样结构，低β导致激波前出现一些孤立波。根据对孤立波、激波和行浪涌的研究，结合非线性动力学的自组织，可以给出波的一般定义。

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From solitary wave to traveling surge

The solution of kinetic Alfven wave under action of anomalous resistance has two branches: the slow wave, VPVA cosθ will evolve into a stationary structure of Alfven traveling surge and the fast wave VPVA cosθ will be in a wave-broken state. Such traveling surge structure is a typical self-organization phenomenon and its wave form is determined by parameter β which represents the magnitude of resistance. High β leads to shock-like structure and low β to the appearance of some solitary waves in front of the shock. According to the study on solitary wave, shock wave and traveling surge in conjunction with self-organization of nonlinear dynamics, a general definition of wave can be given.

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来源期刊

Science in China Series A-Mathematics, Physics, Astronomy & Technological Science

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