Hi, I would like to know if it is possible to use DELFT 3D to model a small circular tank (1.1M3) forced only by meteorological conditions (no inflows or outflows).  I've tried to set up this system but the model seems to be unstable and when I add wind data it crashes with the following error:  *** ERROR NaN found after 3130 timestep(s).  ps. I already tried decreasing the timestep and still not working