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arXiv 1807.08421math.NAcs.NA
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哈密顿偏微分方程的谱准确时空解法

Spectrally accurate space-time solution of Hamiltonian PDEs

Università di Firenze(佛罗伦萨大学);Università di Bari(巴里大学);Universidad de Zaragoza(萨拉戈萨大学)

Luigi Brugnano, Felice Iavernaro, Juan I. Montijano, Luis Ràndez

AI总结:

本文提出一种谱准确的时空解法,用于求解多频率高振荡哈密顿问题,通过改进方法提高效率。

摘要:

近期,利用哈密顿边界值方法(HBVMs)作为谱方法来解决多频率、高振荡哈密顿问题,已在数值求解方面取得了进展。当问题来源于(可能为哈密顿的)偏微分方程(PDEs)的空间半离散化时,所得到的问题可能是刚性振荡的,而非高振荡的。在这种情况下,需要不同的方法实现,以获得最大的效率。

英文摘要:

Recently, the numerical solution of multi-frequency, highly-oscillatory Hamiltonian problems has been attacked by using Hamiltonian Boundary Value Methods (HBVMs) as spectral methods in time. When the problem derives from the space semi- discretization of (possibly Hamiltonian) partial differential equations (PDEs), the resulting problem may be stiffly-oscillatory, rather than highly-oscillatory. In such a case, a different implementation of the methods is needed, in order to gain the maximum efficiency.

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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