OF16ext GGI - divergence after a rotation of ~ 180 degree
 

Hi everybody,

I am trying to run some simulations with the OF16ext and ggi.

I have an outer field where all boundaries set to zeroGradient. (Velocity and pressure)

I have an internal rotating mesh with a fixed rotational speed of 300 rounds per minute.

At the beginning of the calculation everything goes fine. But at an angle around 180° my simulations just gets totally wrong.

see this gif animation:
http://ubuntuone.com/0yQl0kh42shqy6PHS6m6MW

My thought is the problem lies within the ggi pair which gets posted in the log file. The values are growing by the time steps. Does anyone know what exactly this ggi pair logging says?

ggi pair at beginning
ggi pair at ending
does anyone have an idea? I attached some files including a shortened log file of the icodymfoam solver.

Best wishes

Andy

Hi Andreas,
I would suggest first of all to check how the mesh looks like at the end of your simulation. From what you say, I think your mesh did not slide properly.
Cheers
Ivan