Time continuity error & FAN patch
Hi all,
I try to simulate a ducted fan in the tail of a body. If the fixed jump is below 1000 there is no movment in the mass of air (Paraview cant plot the velocity or pressure field), if i increase the pressure jump after few iteration (simpleFoam) diverge in the time continuity error.. I don't know were the problem could be. Tell me all the information you need to uderstand what could be wrong. Thanks. |
P Initial condition
Code:
/*--------------------------------*- C++ -*----------------------------------*\ Code:
/*--------------------------------*- C++ -*----------------------------------*\ Code:
/*--------------------------------*- C++ -*----------------------------------*\ Code:
/*--------------------------------*- C++ -*----------------------------------*\ Code:
/*--------------------------------*- C++ -*----------------------------------*\ Code:
/*--------------------------------*- C++ -*----------------------------------*\ |
Ok,after some try i think that the error become from the inlet boudary condition that is a fixedInletValue of 0. When i increase the velocity the continuity error remain small.
A question, wich BC i have to use, if i want that there is no inlet and outlet constrain. I mean, if i want to simulate a fan in a free air without knowing the fan mass flow, only the pressure jump... |
Hi zephiro,
I have copied this BCs from some tutorial for my case, when I want to let the BCs be computed Code:
inlet and Code:
outlet I hope it helps otherwise the calculated BC could help... just a guess http://cfd.direct/openfoam/user-guide/boundaries/ regards Alex |
Thanks for your reply, now i try youre suggestion, i'm sure it will work.
Best regards Francesco |
All times are GMT -4. The time now is 04:25. |