Changed parameters in RK to Perot and Nallapati SanRKPCM1 eq 67
improved comments divergence calculation, changed initial pressure field to a staggered time, changed python script so every run has his own logfile
changed gitignore file, now the logfiles are not seen as changes.
Changed parameters in rk back to Wray
Changed timestamp for the logfile and applied the good staggering for the pressure(with only half a timestep back in time.
Correction for timestamp in python script
Shifted the initial flow field to compare the pressure at t=1
Removed a leftover print statement in the calculation of conv_diff and changed the actual time step evaluation of the boundary condition to the actual staggered way.
quickfix with a negative divergence to get the seemingly different approach of Wesseling instead of Sanderse
Renamed final pressure correction step. Removed quickfix in divergence (utils).
Correct some things I forgot in the previous step