... for autonomous and nonautonomous 3D Navier-Stokes-Voight equations. Discret ContinDyn Syst Ser B. 2011(6-3), 985–1002 (2011)12. Babin, AV, Vishik, MI: Attractors of Evolutionary Equations, Studies ... Evolution Equations. Cambridge University Press, Cambridge (1991)20. Lu, SS, Wu, H, Zhong, CK: Attractors for non-autonomous 2D Navier-Stokes equations with normal external forces. DiscCont Dyn ... 3D non-autonomous NSV equations.Main difficulties we encountered are as follows:(1) how to obtain a contractive function,(2) how to deduce the uniformly asymptotical compactness from a contractivefunction,(3)...