arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.10440math.AP
收藏

近平衡能斯特-普朗克-纳维尔-斯托克斯系统

Nernst-Planck-Navier-Stokes systems near equilibrium

Peter Constantin, Mihaela Ignatova, Fizay-Noah Lee

摘要:

能斯特-普朗克-纳维尔-斯托克斯系统模拟离子在流体中的电扩散。我们证明了整体存在的解决方案,在三维空间中的有界域,无论是阻塞(无通量)或统一的选择性(特殊狄利克雷)的离子浓度的边界条件。当初始条件是定态解的充分小扰动时,证明了强解的整体存在性。在强规范中,这些解仍然接近于均衡。证明的主要两个步骤是(1)相对熵和(Kullback-Leibler发散)的衰减和(2)由相对熵和控制偏差的$L^2$范数。

英文摘要:

The Nernst-Planck-Navier-Stokes system models electrodiffusion of ions in a fluid. We prove global existence of solutions in bounded domains in three dimensions with either blocking (no-flux) or uniform selective (special Dirichlet) boundary conditions for ion concentrations. The global existence of strong solutions is established for initial conditions that are sufficiently small perturbations of steady state solutions. The solutions remain close to equilibrium in strong norms. The main two steps of the proof are (1) the decay of the sum of relative entropies (Kullback-Leibler divergences) and (2) the control of $L^2$ norms of deviations by the sum of relative entropies.

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。

↑