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Global and exponential attractors for a class of non-Newtonian micropolar fluids
Mathematical Methods in the Applied Sciences ( IF 2.9 ) Pub Date : 2021-04-15 , DOI: 10.1002/mma.7388 Chengfei Ai 1 , Zhong Tan 1
Mathematical Methods in the Applied Sciences ( IF 2.9 ) Pub Date : 2021-04-15 , DOI: 10.1002/mma.7388 Chengfei Ai 1 , Zhong Tan 1
Affiliation
In this paper, we consider the long-time behavior of weak solutions for the 2D autonomous non-Newtonian micropolar fluids. By means of the method of ℓ-trajectories introduced by Málek and Pražák, we first establish the existence of global attractor for solution semigroup {S(t)}t ≥ 0 associated with (1)–(3) and estimate the fractal dimension of global attractor in H × L2(Ω) is finite. Then we derive the existence of exponential attractor for solution semigroup {S(t)}t ≥ 0 associated with (1.1)-(1.3) in H × L2(Ω).
中文翻译:
一类非牛顿微极流体的全局和指数吸引子
在本文中,我们考虑了二维自主非牛顿微极流体弱解的长期行为。通过的方法的手段ℓ -trajectories通过马利克和Pražák引入,我们首先建立全球吸引子的存在为溶液半群{小号(吨)}吨 ≥0与(1)相关联的- (3)和估计的分形维数H × L 2 (Ω) 中的全局吸引子是有限的。然后我们推导出对于解半群 { S ( t )} t ≥ 0与 (1.1)-(1.3) 在H × L 2 中存在指数吸引子(Ω)。
更新日期:2021-04-15
中文翻译:
一类非牛顿微极流体的全局和指数吸引子
在本文中,我们考虑了二维自主非牛顿微极流体弱解的长期行为。通过的方法的手段ℓ -trajectories通过马利克和Pražák引入,我们首先建立全球吸引子的存在为溶液半群{小号(吨)}吨 ≥0与(1)相关联的- (3)和估计的分形维数H × L 2 (Ω) 中的全局吸引子是有限的。然后我们推导出对于解半群 { S ( t )} t ≥ 0与 (1.1)-(1.3) 在H × L 2 中存在指数吸引子(Ω)。