Learning Forum

[fatima Zmim]

Hellow everyone I want to simulat water temperature insid cylidre (3D). This cylindre insid box with user defined function . But I have the divergence probleme for temperature.  when i start my simulation i recieved message "Turbulence velocity limited to viscosity ratio of 1000000e+05). I try to run calculat with application boundary condition (convection and radiation ) without using UDF i noticed computational stabilization. 

iS it that he use "user defined function influence he calculation for fluid simulation ?

So please help me to find another way to apply source without using user define function 

[Rob]

What does the UDF do? That's usually a good starting point for troubleshooting. The viscosity ratio warning can be ignored, but it's cause needs to be understood (clue, look at the flow field). 

[fatima Zmim]

thank you for your reply 

[fatima Zmim]

my problem is i find values does not make sense for temperature

[Rob]

OK, but what does the UDF do? That'll guide us towards a solution.