Abstract

This paper is concerned with 3D micropolar equations with a velocity damping term σ|u|β−1u. We mainly focus on the large time decay of the L2-norm of weak solutions with β>145 and consider the upper bounds of the derivatives of the strong solution to the system with β≥3. Moreover, the asymptotic stability for the large solutions of (1.1) and the error estimate between (1.1) and the classic micropolar equations is also investigated.

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