Global Existence and Exponential Decay of Strong Solutions of Nonhomogeneous Magneto-Micropolar Fluid Equations with Large Initial Data and Vacuum

The present paper concerns an initial boundary value problem of two-dimensional nonhomogeneous magneto-micropolar fluid equations with nonnegative density. We establish the global existence and exponential decay rates of strong solutions. In particular, the initial data can be arbitrarily large. The key idea is to use a lemma of Desjardins (Arch Rational Mech Anal 137:135–158, 1997).