[aerospain]

Hi everyone,

I am running a grid convergence study on a 2D square cylinder by refining four times an initial coarse grid (by refineMesh). All grids have been run by 5000 iterations and each of them, besides the first one, start from a mapped solution of the final iteration (5000) of the previous coarser grid (done by mapFields).

My surprise came when opening in paraView the last two solutions (pictures attached) and the finest grid gave an "unsteady" looking solution.

Mesh04 the first picture and Mesh05 the other one.

Any hints, please?

Thanks!