On well-posedness of the Muskat problem with surface tension
On well-posedness of the Muskat problem with surface tension
复制标题
表面张力的 Muskat 问题的适定性
DOI:
10.1016/j.aim.2020.107344
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发表时间:
2020
影响因子:
1.7
通讯作者:
Nguyen, Huy Q.
中科院分区:
文献类型:
--
作者:
Nguyen, Huy Q.
We consider the Muskat problem with surface tension for one fluid or two fluids, with or without viscosity jump, with infinite depth or Lipschitz rigid boundaries, and in arbitrary dimension d of the interface. The problem is nonlocal, quasilinear, and to leading order, is scaling invariant in the Sobolev space H s c (R d) with s c= 1+ d 2. We prove local well-posedness for large data in all subcritical Sobolev spaces H s (R d), s> s c, allowing for initial interfaces whose curvatures are unbounded and, furthermore when d= 1, not locally square integrable. To the best of our knowledge, this is the first large-data well-posedness result that covers all subcritical Sobolev spaces for the Muskat problem with surface tension. We reformulate the problem in terms of the Dirichlet-Neumann operator and use a paradifferential approach to reduce the problem to an explicit parabolic equation, which is of independent interest.
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