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arXiv 1612.06110math.AP
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有界多边形中具有完全非均匀速度的定常输运方程的H^1解

Solutions H^1 of the steady transport equation in a bounded polygon with a fully non-homogeneous velocity

Jean-Marie Bernard

摘要:

研究了二维有界多边形中具有无发散驱动速度W1的定常迁移方程$\infty$的H1解.由于假定速度在边界上是完全非均匀的,因此解的存在性和唯一性要求在开部$Γ$上有一个边界条件--其中u的法向分量是严格负的。在以前的文章中,我们研究了这个定常输运方程在L2中的解.本文所发展的方法可推广到证明H1中$Γ$上Dirichlet边界条件解的存在唯一性--仅当u的法向分量在$Γ$的边界处不为零时--当u的法向分量在$Γ$ --的边界处为零时,在适当的假设下,我们在$Γ$ --的端点附近构造了局部H1解,从而证明了在$Γ$ --上具有Dirichlet边界条件的迁移方程的H1解的存在唯一性.

英文摘要:

This article studies the solutions in H 1 of a steady transport equation with a divergence-free driving velocity that is W 1,$\infty$ , in a two-dimensional bounded polygon. Since the velocity is assumed fully non-homogeneous on the boundary, existence and uniqueness of the solution require a boundary condition on the open part $Γ$ -- where the normal component of u is strictly negative. In a previous article, we studied the solutions in L 2 of this steady transport equation. The methods, developed in this article, can be extended to prove existence and uniqueness of a solution in H 1 with Dirichlet boundary condition on $Γ$ -- only in the case where the normal component of u does not vanish at the boundary of $Γ$ --. In the case where the normal component of u vanishes at the boundary of $Γ$ -- , under appropriate assumptions, we construct local H 1 solutions in the neighborhood of the end-points of $Γ$ -- , which allow us to establish existence and uniqueness of the solution in H 1 for the transport equation with a Dirichlet boundary condition on $Γ$ -- .

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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