Too many random seeds in my humble opinnion

[Niceno]

Dear Eugene,

I think you did a very nice job with implementation of the SED method. I took your sources, changed the variable names to my taste, and have played with them for a day. I wrote subroutines to export unsteady results to .vtk format (for Paraview, for example), but have noticed something unpleasant. After several dozens of time steps, your eddies somehow stop moving and solutions become practically steady :-(

I browsed through the source and noticed that you call RANDOM_SEED to often, meaning you start the same random sequence at each time step. I removed all calls to RANDOM_SEED and eddies started to move freely over and around the problem domain.

Cheers,

Bojan