hello everyone.
I ran 2D simulation (full momentum) and i had some messages during my simulation (see picture – link below). I want to ask what exactly mean WSEL , ERROR and CONVERGENCE for particular cell? When these messeges appear? What is the meaning of those values? Are those informations usefull for simulation setup?
Thanks for your response.
Maximum iterations of 20 Cell WSEL ERROR CONVERGENCE
01SEP2008 01:42:44 2dArea Cell # 4082 240.97 0.0031 2
Thank you. OK so my model is diverging in 1:45:44 in cell #4082, but what exactly does it mean value of WSEL and ERROR? what is happing in my cell at WSEL = 240.97?
Maximum iterations of 20 Cell WSEL ERROR CONVERGENCE
01SEP2008 01:42:44 2dArea Cell # 4082 240.97 0.0031 2
And one more question – what is the best aprroach to converging solution?
increase iteration? or increase theta (to 1) ? create restart file and use it as initial condition ?
first off, the error you have for that cell is small and I would not worry about it. depending on what the study is for, it may be ok to have values up to 1. Lowering the timestep is one of the easiest ways to help with convergence otherwise you would need to adjust iterations or adjust grid cells. A restart file/initial conditions may be helpful depending on when the error occurs in the simulation (at the beginning or when flow first enters a cell).