Divergence due to periodic boundary condition

radix · January 16, 2012, 14:14

Dear fellow Fluent users,

I was trying to run a simulation on a transonic fan blade with rotational periodic boundary condition. However, instead of having the iteration started, it gave me an error message at the beginning of the iteration. In other words, the iteration failed to start. The error message was about the divergence detected by AMG solver; pressure correction.
Does this has something to do with the grid quality (e.g. skewness etc)?

Many thanks in advance.

shk12345 · January 17, 2012, 10:02

hi
this may happen sometimes
what are you trying to solve
just don't put all your simulation parameters at once
put them one by one
first solve the flow and then mesh motion

and tell what happens in that case

try to change the mesh type also
regards
shk

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Periodic boundary condition in 2 directions	arash	FLUENT	21	July 25, 2018 13:44
Rotational periodic Boundary condition	achinta	OpenFOAM	2	May 27, 2010 05:04
periodic boundary condition	elyyan	FLUENT	4	April 21, 2006 17:30
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 16:55
Finite difference and Periodic Boundary Condition	Linda	Main CFD Forum	2	May 27, 2003 11:52

January 17, 2012, 10:02		#2
shk12345 Senior Member shoeb khan Join Date: Nov 2011 Posts: 179 Rep Power: 15	hi this may happen sometimes what are you trying to solve just don't put all your simulation parameters at once put them one by one first solve the flow and then mesh motion and tell what happens in that case try to change the mesh type also regards shk