Hello, evereone! I would like to know if anyone knows of any paper with data and a solution for transient Navier Stokes.
Hello Felipe,
For transient incompressible Navier-Stokes, a basic test is the Taylor-Green vortex
https://perso.math.u-pem.fr/bouchut.francois/publications/vectorBGKNS.pdf
p. 27
It has vanishing right-hand side but nontrivial analytic solution with periodic boundary conditions.