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arXiv 2406.04754math.AP
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Oldroyd-B模型的整体适定性与长时间行为

Global well-posedness and large time behavior for the Oldroyd-B model

Haifeng Shang

AI总结:

本文研究了$\mathbb R^d$上Oldroyd-B模型的整体适定性与最优衰减估计,给出了临界Besov空间中小初始数据解的整体存在性的简化证明,并利用速度耗散与阻尼机制建立了解的最优衰减率。

摘要:

本文研究$\mathbb R^d$($d\geq2$)上Oldroyd-B模型的整体适定性与最优衰减估计。利用该系统的特殊结构,我们给出了初始数据在临界Besov空间中小且耦合参数非小的解的整体存在性的简化证明。此外,通过充分利用速度耗散和阻尼机制的作用,在初始数据的最小小假设下建立了解的最优衰减率。

英文摘要:

This paper studies the global well-posedness and optimal decay estimates to the Oldroyd-B model in $\mathbb R^d$ ($d\geq2$). By utilizing the special structure of this system, we give a simplified proof to the global existence of solutions for the case of initial data small in critical Besov spaces and non-small coupling parameters. Moreover, the optimal decay rates of the solutions under minimal small assumption on the initial data are established by fully making use of the effect of velocity dissipation and damping mechanism.

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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