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arXiv 0908.1691math.APmath-phmath.MP
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流体载荷平板集合的非局部方法

Collections of Fluid Loaded Plates: A Nonlocal Approach

Anthony C. L Ashton

摘要:

我们考虑的运动的一个集合的流体加载的弹性板,水平地位于一个无限长的通道。我们使用一个新的,统一的方法来解决边值问题,介绍了A. S。Fokas在20世纪90年代后期提出的,并证明了该问题等价于一个单参数积分方程系统。我们给出了一个详细的研究线性问题,提供明确的解决方案和适定性结果的标准索伯列夫空间。我们表明,相关的柯西问题完全由矩阵确定,该矩阵仅取决于板块的平均间距和每种驱动流体的水平速度。这个矩阵对应于傅立叶空间中发展方程的半群的无穷小生成元。通过分析这个矩阵的性质,我们分类了问题渐近稳定的充要条件。

英文摘要:

We consider the motion of a collection of fluid loaded elastic plates, situated horizontally in an infinitely long channel. We use a new, unified approach to boundary value problems, introduced by A.S. Fokas in the late 1990s, and show the problem is equivalent to a system of 1-parameter integral equations. We give a detailed study of the linear problem, providing explicit solutions and well-posedness results in terms of standard Sobolev spaces. We show that the associated Cauchy problem is completely determined by a matrix, which depends solely on the mean separation of the plates and the horizontal velocity of each of the driving fluids. This matrix corresponds to the infinitesimal generator of the semigroup for the evolution equations in Fourier space. By analysing the properties of this matrix, we classify necessary and sufficient conditions for which the problem is asymptotically stable.

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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