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arXiv 1806.01030math.AP
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具有不同密度和非局部自由能的不可压缩流体扩散界面模型的弱解

Weak Solutions for a Diffuse Interface Model for Two-Phase Flows of Incompressible Fluids with Different Densities and Nonlocal Free Energies

Helmut Abels, Yutaka Terasawa

摘要:

证明了二维和三维空间中两种不同密度的粘性不可压缩牛顿流体在有界区域内流动的扩散界面模型的弱解的存在性。与以前的工作相比,我们研究了一个模型与奇异的非局部自由能,它控制的体积分数的$H^{α/2}$ -范数。借助隐式时间离散,我们证明了大时间弱解的存在性。

英文摘要:

We prove existence of weak solutions for a diffuse interface model for the flow of two viscous incompressible Newtonian fluids with different densities in a bounded domain in two and three space dimensions. In contrast to previous works, we study a model with a singular non-local free energy, which controls the $H^{α/2}$-norm of the volume fraction. We show existence of weak solutions for large times with the aid of an implicit time discretization.

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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