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arXiv 1707.06949math.AP
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Serrin问题的稳定性和接触角运动模型的动力学稳定性

Stability of Serrin's Problem and Dynamic Stability of a Model for Contact Angle Motion

William M. Feldman

摘要:

本文研究了Serrin对称性问题的定量稳定性及其与准静态毛细液滴接触角运动动力学模型的联系。我们证明了一个新的稳定性结果,这是线性的,只依赖于一个弱规范\[ \big\||Du|^2- 1\big\|_{L^2(\partial Ω)}. \]这种改进是特别重要的,因为我们的$L^2(\partial Ω)$规范平方的$|Du|^2-1$正是相关的动力学模型的能量耗散率。将动态模型的能量估计与平衡问题的新稳定性结果相结合,产生接触角运动问题的正则解到稳态的指数收敛速率。据我们所知,这是一个几何最小化问题的稳定性估计的第一个应用程序,以显示相关的梯度流的动态稳定性。

英文摘要:

We study the quantitative stability of Serrin's symmetry problem and it's connection with a dynamic model for contact angle motion of quasi-static capillary drops. We prove a new stability result which is both linear and depends only on a weak norm \[ \big\||Du|^2- 1\big\|_{L^2(\partial Ω)}. \] This improvement is particularly important to us since the $L^2(\partial Ω)$ norm squared of $|Du|^2-1$ is exactly the energy dissipation rate of the associated dynamic model. Combining the energy estimate for the dynamic model with the new stability result for the equilibrium problem yields an exponential rate of convergence to the steady state for regular solutions of the contact angle motion problem. As far as we are aware this is one of the first applications of a stability estimate for a geometric minimization problem to show dynamic stability of an associated gradient flow.

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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