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arXiv 1104.1193math.AP
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FENE哑铃型聚合物模型:动量平衡方程解的存在唯一性

The FENE dumbbell polymer model: existence and uniqueness of solutions for the momentum balance equation

Adriana Valentina Busuioc, Ionel Sorin Ciuperca, Dragos Iftimie, Liviu Iulian Palade

摘要:

本文考虑了不可压Navier-斯托克斯方程与相应的Fokker-Planck-Smoluchowski微分方程耦合的FENE哑铃型聚合物模型。我们显示的情况下,一个二维有界域的全球适定性。我们假设在一般情况下,初始速度足够小,初始概率密度足够接近平衡解;此外,对系数施加了一个附加条件。在共转情形下,我们仅假设初始概率密度足够接近平衡解。

英文摘要:

We consider the FENE dumbbell polymer model which is the coupling of the incompressible Navier-Stokes equations with the corresponding Fokker-Planck-Smoluchowski di ffusion equation. We show global well-posedness in the case of a 2D bounded domain. We assume in the general case that the initial velocity is sufficiently small and the initial probability density is sufficiently close to the equilibrium solution; moreover an additional condition on the coeffcients is imposed. In the corotational case, we only assume that the initial probability density is sufficiently close to the equilibrium solution.

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