Modify existing velocity field
 

Dear foamers,

Does anyone know that how I can add random number to an existing velocity filed?

I used funkySetFields to initialise a random velocity filed for my simulation, after it has run for some time, I want to restart the simulation by adding random number to the velocity field I've already got. Is there any way to achieve that?

Hope anyone can give me a hint. Thank you very much.

Best regards,
Tony

you can modify your solver in createFields, then after where it reads velocity you can add some thing like U=U + U*rand()

Hi Nima,

Thanks for the reply. I just wonder if I modify the solver, would the velocity field always be like that? Since I just want to modify the existing field and put it to run again, do you have any ideas about that?

Thank you very much.

Regards,
Tony

if you change only creatFields.H, then it would be only in first iteration