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arXiv 1601.02573math.AP
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定常Stokes流体中障碍物的尺寸估计

Size estimates of an obstacle in a stationary Stokes fluid

E. Beretta, C. Cavaterra, J. H. Ortega, S. Zamorano

摘要:

本文主要研究了在R^d(d= 2,3)中的有界区域Ω中,由Stokes系统控制的粘性流体所填充的空腔D的大小,并利用Ω外边界上的速度和Cauchy力来估计。更准确地说,我们建立了一些下限和上界的外部测量之间的差异,当障碍物存在和没有对象。这个结果的证明是基于Stokes系统解的内部正则性结果和唯一延拓的定量估计。

英文摘要:

In this work we are interested in estimating the size of a cavity D immersed in a bounded domain Ω, contained in R^d, d=2,3, filled with a viscous fluid governed by the Stokes system, by means of velocity and Cauchy forces on the external boundary of Ω. More precisely, we establish some lower and upper bounds in terms of the difference between the external measurements when the obstacle is present and without the object. The proof of the result is based on interior regularity results and quantitative estimates of unique continuation for the solution of the Stokes system.

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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