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首页> 外文期刊>Computer physics communications >BEYOND TRAVELLING WAVES - A NEW ALGORITHM FOR SOLVING NONLINEAR EVOLUTION EQUATIONS
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BEYOND TRAVELLING WAVES - A NEW ALGORITHM FOR SOLVING NONLINEAR EVOLUTION EQUATIONS

机译:超越行波-一种求解非线性演化方程的新算法

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摘要

In physical sciences, nonlinear evolution equations (NLEEs) and their exact solutions are of fundamental importance. However, there is no answer yet as to whether or not one is able to go beyond travelling waves with the recently proposed tanh method. In this paper, without loss of conciseness and straightforwardness, a generalized tanh algorithm with symbolic computation is suggested for the construction of new soliton-typed solutions for certain NLEEs. Illustrative examples are presented for several equations of current interest in the physical sciences, i.e., the (2+1)-dimensional breaking soliton equation, the (3+1)-dimensional generalized shallow water wave equation, and the coupled set of the (2+1)-dimensional integrable dispersive long wave equations. [References: 14]
机译:在物理科学中,非线性演化方程(NLEE)及其精确解具有根本的重要性。但是,对于最近提出的tanh方法,是否能够超越行波还没有答案。本文在不损失简洁性和直接性的前提下,提出了一种带有符号计算的广义tanh算法,用于构造某些NLEE的新孤子型解决方案。给出了物理学中当前关注的几个方程的说明性示例,即(2 + 1)维破裂孤子方程,(3 + 1)维广义浅水波方程以及( 2 + 1)维可积分色散长波方程。 [参考:14]

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