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Abstract This paper is devoted to the study of the Second-Grade fluid system from three aspects. Firstly, we establish the well-posedness of the scaled anisotropic Second-Grade fluid system and the hydrostatic Second-Grade fluid system in a thin strip R × T with convex Gevrey-2 initial data. Secondly, we justify the limit from the anisotropic Second-Grade fluid system to the hydrostatic Second-Grade fluid system. Finally, we prove that the hydrostatic Second-Grade fluid system will converge to the hydrostatic Navier–Stokes system as material parameter goes to zero.
Paicu et al. (Wed,) studied this question.