文献类型：期刊文献

英文题名：Global small solutions of 3D incompressible Oldroyd-B model without damping mechanism

作者：Zhu, Yi[1]

机构：[1]East China Univ Sci & Technol, Dept Math, Shanghai 200237, Peoples R China

年份：2018

卷号：274

期号：7

起止页码：2039

外文期刊名：JOURNAL OF FUNCTIONAL ANALYSIS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000425838000005)】；

语种：英文

外文关键词：Oldroyd-B model; Global classical solutions; Non-Newtonian flow

摘要：In this paper, we prove the global existence of small smooth solutions to the three-dimensional incompressible Oldroyd-B model without damping on the stress tensor. The main difficulty is the lack of full dissipation in stress tensor. To overcome it, we construct some time-weighted energies based on the special coupled structure of system. Such type energies show the partial dissipation of stress tensor and the strongly full dissipation of velocity. In the view of treating "nonlinear term" as a "linear term", we also apply this result to 3D incompressible viscoelastic system with Hookean elasticity and then prove the global existence of small solutions without the physical assumption (div-curl structure) as previous works. (C) 2017 Elsevier Inc. All rights reserved.