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arXiv 2202.06340math.AP
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浅水黏性圣维南系统真空自由边界问题经典解的适定性

Well-posedness of classical solutions to the vacuum free boundary problem of the viscous Saint-Venant system for shallow waters

Capital Normal University(首都师范大学);Lanzhou University(兰州大学);The Chinese University of Hong Kong(香港中文大学)

Hai-Liang Li, Yuexun Wang, Zhouping Xin

AI总结:

本文研究了浅水黏性圣维南系统真空自由边界问题经典解的局部时间适定性,通过新的加权能量泛函和估计方法,证明了解在移动边界处的光滑性及退化行为。

摘要:

我们建立了由Gerbeau-Perthame从不可压缩纳维-斯托克斯系统导出的浅水黏性圣维南系统真空自由边界问题经典解的局部时间适定性。我们的解(高度和速度)在整个移动边界处都是光滑的(解在每一点上都满足方程),尽管高度在接近真空边界时退化为距离真空边界的奇异点。证明基于一些新的高阶加权能量泛函和与移动真空边界退化相关的加权估计。

英文摘要:

We establish the local-in-time well-posedness of classical solutions to the vacuum free boundary problem of the viscous Saint-Venant system for shallow waters derived rigorously from incompressible Navier-Stokes system with a moving free surface by Gerbeau-Perthame. Our solutions (the height and velocity) are smooth (the solutions satisfy the equations point-wisely) all the way to the moving boundary, although the height degenerates as a singularity of the distance to the vacuum boundary. The proof is built on some new higher-order weighted energy functional and weighted estimates associated to the degeneracy near the moving vacuum boundary.

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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