{"title":"Weak Solution of One Navier’s Problem for the Stokes Resolvent System","authors":"Dagmar Medková","doi":"10.1007/s00021-025-00959-7","DOIUrl":null,"url":null,"abstract":"<div><p>This paper studies the Stokes resolvent system <span>\\(-\\Delta \\textbf{u}+\\lambda \\textbf{u}+\\nabla \\rho =\\textbf{f}\\)</span>, <span>\\(\\nabla \\cdot \\textbf{u}=\\chi \\)</span> in <span>\\(\\Omega \\)</span> with the Navier condition <span>\\(\\textbf{u}_\\textbf{n}=\\textbf{g}_\\textbf{n}\\)</span>, <span>\\([\\partial \\textbf{u}/\\partial \\textbf{n}-\\rho \\textbf{n}+b\\textbf{u}]_\\tau =\\textbf{h}_\\tau \\)</span> on <span>\\(\\partial \\Omega \\)</span>. Here <span>\\(\\Omega \\subset {{\\mathbb {R}}}^2\\)</span> is a bounded domain with Lipschitz boundary. <span>\\(\\Omega \\)</span> might have holes. First we define and study weak solutions in <span>\\(W^{1,2}(\\Omega ;{{\\mathbb {C}}}^2)\\times L^2(\\Omega ;{{\\mathbb {C}}})\\)</span>. Using this result we are able to prove the existence of strong solutions of the problem in Sobolev spaces <span>\\(W^{s,q}(\\Omega ;{{\\mathbb {C}}}^2)\\times W^{s-1,q}(\\Omega ;{{\\mathbb {C}}})\\)</span>, in Besov spaces <span>\\(B_s^{q,r}(\\Omega ,{{\\mathbb {C}}}^2)\\times B_{s-1}^{q,r}(\\Omega ;{{\\mathbb {C}}})\\)</span> and classical solutions in the spaces <span>\\({{\\mathcal {C}}}^{k,\\alpha } ({\\overline{\\Omega }} ;{{\\mathbb {C}}}^2)\\times {{\\mathcal {C}}}^{k-1,\\alpha }({\\overline{\\Omega }} ;{{\\mathbb {C}}})\\)</span>.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"27 3","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mathematical Fluid Mechanics","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s00021-025-00959-7","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
This paper studies the Stokes resolvent system \(-\Delta \textbf{u}+\lambda \textbf{u}+\nabla \rho =\textbf{f}\), \(\nabla \cdot \textbf{u}=\chi \) in \(\Omega \) with the Navier condition \(\textbf{u}_\textbf{n}=\textbf{g}_\textbf{n}\), \([\partial \textbf{u}/\partial \textbf{n}-\rho \textbf{n}+b\textbf{u}]_\tau =\textbf{h}_\tau \) on \(\partial \Omega \). Here \(\Omega \subset {{\mathbb {R}}}^2\) is a bounded domain with Lipschitz boundary. \(\Omega \) might have holes. First we define and study weak solutions in \(W^{1,2}(\Omega ;{{\mathbb {C}}}^2)\times L^2(\Omega ;{{\mathbb {C}}})\). Using this result we are able to prove the existence of strong solutions of the problem in Sobolev spaces \(W^{s,q}(\Omega ;{{\mathbb {C}}}^2)\times W^{s-1,q}(\Omega ;{{\mathbb {C}}})\), in Besov spaces \(B_s^{q,r}(\Omega ,{{\mathbb {C}}}^2)\times B_{s-1}^{q,r}(\Omega ;{{\mathbb {C}}})\) and classical solutions in the spaces \({{\mathcal {C}}}^{k,\alpha } ({\overline{\Omega }} ;{{\mathbb {C}}}^2)\times {{\mathcal {C}}}^{k-1,\alpha }({\overline{\Omega }} ;{{\mathbb {C}}})\).
期刊介绍:
The Journal of Mathematical Fluid Mechanics (JMFM)is a forum for the publication of high-quality peer-reviewed papers on the mathematical theory of fluid mechanics, with special regards to the Navier-Stokes equations. As an important part of that, the journal encourages papers dealing with mathematical aspects of computational theory, as well as with applications in science and engineering. The journal also publishes in related areas of mathematics that have a direct bearing on the mathematical theory of fluid mechanics. All papers will be characterized by originality and mathematical rigor. For a paper to be accepted, it is not enough that it contains original results. In fact, results should be highly relevant to the mathematical theory of fluid mechanics, and meet a wide readership.