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arXiv 1907.03014math.AP
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二维水波问题非线性薛定谔近似在弧长格式下的有效性

Validity of the Nonlinear Schrödinger Approximation for the Two-Dimensional Water Wave Problem With and Without Surface Tension in the Arc Length Formulation

Wolf-Patrick Düll

摘要:

本文研究了有限深无限长渠道中的二维水波问题,其中既有表面张力,也有无表面张力。为了描述这个问题的小振荡波包解的包络的演化,可以导出非线性薛定谔方程作为形式近似方程。近年来,这种近似的有效性已被证明的情况下,没有表面张力。在本文中,我们严格地证明了非线性薛定谔近似的情况下,表面张力和无证明误差估计在一个物理相关的时间跨度在弧长制定的二维水波问题。误差估计相对于表面张力的强度是均匀的,因为波包的高度和表面张力趋于零。

英文摘要:

We consider the two-dimensional water wave problem in an infinitely long canal of finite depth both with and without surface tension. In order to describe the evolution of the envelopes of small oscillating wave packet-like solutions to this problem the Nonlinear Schrödinger equation can be derived as a formal approximation equation. In recent years, the validity of this approximation has been proven by several authors for the case without surface tension. In this paper, we rigorously justify the Nonlinear Schrödinger approximation for the cases with and without surface tension by proving error estimates over a physically relevant timespan in the arc length formulation of the two-dimensional water wave problem. The error estimates are uniform with respect to the strength of the surface tension, as the height of the wave packet and the surface tension go to zero.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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