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arXiv · 2106.14785

Global well-posedness and inviscid limits of the generalized Oldroyd type models

Xiaoping Zhai·Yuanyuan Dan·Yongsheng Li
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Abstract

We obtain the global small solutions to the generalized Oldroyd-B model without damping on the stress tensor in $\mathbb{R}^n$. Our result give positive answers partially to the question proposed by Elgindi and Liu (Remark 2 in Elgindi and Liu [J Differ Equ 259:1958--1966, 2015)]. The proof relies heavily on the trick of transferring dissipation from $u$ to $\tau$, and a new commutator estimate which may be of interest for future works. Moreover, we prove a global result of inviscid limit of two dimensional Oldroyd type models in the Sobolev spaces. The convergence rate is also obtained simultaneously.

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Xiaoping Zhai, Yuanyuan Dan, Yongsheng Li. 2021-06-28. Global well-posedness and inviscid limits of the generalized Oldroyd type models. https://arxiv.org/abs/2106.14785

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