overset grid example

teofil · July 19, 2017, 11:36

In these days I tried some of the new overset grid functionality of OF v1706.
I just modified a little bit the overInterDyMFoam floatingBody example.
I increased the water coloumn height and I remove all constraint in the dynamicMeshDict and rerun the case.
I found some strange behaviour for the water. In some instant the water simulation stop while the solid object still floating. After some time the water restart to be computed and then it stopped again.
Could someone explain what is the meaning of such strange results?
Have a look to the attached video.

Many thanks, ALex

ginop · November 1, 2017, 01:11

Hi Alessandro,
did you figure out what was the issue?
I am keen to hear from you as I do see some funny behavior in the floatingBody tutorial too, simply changing domain size.
Regards,
Gino

matejfor · November 1, 2017, 05:03

Hi Alessandro,

I would identify these strange moments in time and check the log from the simulation to see whether the equations were solved and converged. Maybe (fabulating) the solver somehow figured out the alpha is converged and there is no need for update.

Please give more details about the strange moments.

Matej

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November 1, 2017, 01:11		#2
ginop New Member Gino Parisella Join Date: Mar 2017 Location: Perth, Western Australia Posts: 22 Rep Power: 9	Hi Alessandro, did you figure out what was the issue? I am keen to hear from you as I do see some funny behavior in the floatingBody tutorial too, simply changing domain size. Regards, Gino

November 1, 2017, 05:03		#3
matejfor Senior Member matej forman Join Date: Mar 2009 Location: Brno, Czech Republic Posts: 182 Rep Power: 17	Hi Alessandro, I would identify these strange moments in time and check the log from the simulation to see whether the equations were solved and converged. Maybe (fabulating) the solver somehow figured out the alpha is converged and there is no need for update. Please give more details about the strange moments. Matej