Abstract
This paper focuses on the stability problem and decay estimates for two classes of three-dimensional (3D) magneto-micropolar equations with mixed partial viscosity. When \(\mu _3= \nu _3 = \gamma _1 = \gamma _2=0\) and \(\chi \Delta u \) replaced by \(\chi u\) in (1.2), by fully exploiting the structure of the system, and the method of bootstrapping argument, we prove the global stability of solutions to this system with initial data small in \(H^2({\mathbb {R}}^3)\). Furthermore, for these global solutions with initial data in \(H^s({\mathbb {R}}^3)\) \((s \ge 3)\) being large, we obtain their global \(H^s({\mathbb {R}}^3)\) \((s \ge 3)\) bound which is independent of time. In addition, we obtain the global existence of solutions for small initial data and the decay estimates of these solutions to 3D magneto-micropolar equations with mixed partial viscosity [namely \(\mu _3= \gamma _1 = \gamma _2=0\) and \(\chi \Delta u \) replaced by \(\chi u\) in (1.2)].
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Li, M. Stability and large time decay for the three-dimensional magneto-micropolar equations with mixed partial viscosity. Z. Angew. Math. Phys. 74, 110 (2023). https://doi.org/10.1007/s00033-023-01992-0
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DOI: https://doi.org/10.1007/s00033-023-01992-0