arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1504.07080math.APmath.OC
收藏

具有解相关滑移边界的Stokes问题:解关于区域的稳定性

Stokes problem with a solution dependent slip bound: Stability of solutions with respect to domains

Jaroslav Haslinger, Jan Stebel

摘要:

本文研究了有界平面区域$Ω$中的Stokes问题,该区域具有摩擦型边界条件,在滑移和无滑移阶段之间切换。与我们以前的工作[6]不同,在本文中,门限值可能取决于速度场。除了通常的速度-压力公式,我们引入了一个替代配方与三个拉格朗日乘子,它允许一个更灵活的处理的抗渗性条件以及最优设计问题的费用函数取决于剪切和/或法向应力。我们的主要目标是确定在哪些条件下有关光滑的$Ω$,解决方案的斯托克斯系统连续依赖于变化的$Ω$。有了这个结果在我们的处置,我们很容易地证明了一个解决方案的存在性最优形状设计问题的一大类成本泛函。

英文摘要:

We study the Stokes problem in a bounded planar domain $Ω$ with a friction type boundary condition that switches between a slip and no-slip stage. Unlike our previous work [6], in the present paper the threshold value may depend on the velocity field. Besides the usual velocity-pressure formulation, we introduce an alternative formulation with three Lagrange multipliers which allows a more flexible treatment of the impermeability condition as well as optimum design problems with cost functions depending on the shear and/or normal stress. Our main goal is to determine under which conditions concerning smoothness of $Ω$, solutions to the Stokes system depend continuously on variations of $Ω$. Having this result at our disposal, we easily prove the existence of a solution to optimal shape design problems for a large class of cost functionals.

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。

↑