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arXiv 1806.07660math.AP
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具有广义表面能的粘性表面波问题

The viscous surface wave problem with generalized surface energies

Antoine Remond-Tiedrez, Ian Tice

摘要:

研究了有限深度水平周期区域中的三维不可压缩粘性流体,其自由边界为函数的图形。流体受到重力和由表面能产生的广义力的作用。表面能包括弯曲和表面张力效应。我们证明了初始条件足够接近平衡的问题是全球适定性和解决方案衰减到平衡指数快速,在适当的规范。我们的证明以非线性能量方法为中心,该方法与完全非线性表面能的仔细估计相结合。

英文摘要:

We study a three-dimensional incompressible viscous fluid in a horizontally periodic domain with finite depth whose free boundary is the graph of a function. The fluid is subject to gravity and generalized forces arising from a surface energy. The surface energy incorporates both bending and surface tension effects. We prove that for initial conditions sufficiently close to equilibrium the problem is globally well-posed and solutions decay to equilibrium exponentially fast, in an appropriate norm. Our proof is centered around a nonlinear energy method that is coupled to careful estimates of the fully nonlinear surface energy.

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