Floating invalid error massage occur when i selected 3TL scheme in sigma coordinate

hi
i have a problem that using the efdc+ model for dye tracer test in ideal grid.
when i selected 3TL scheme in sigma coordinate, the efdc model was blown up.
i don’t understand that problem. because the prior efdc model does not appear at same conditions
thanks

Hi,

Is it possible to show your model for us to review ? Without looking the type of grid and the boundary you have defined, it is hard to understand what is causing the error in the model.

Thanks.

Best,
Janesh