mass flux residual

maxi · October 11, 2011, 10:42

hiii,

im trying to achieve convergence but the mass flux residual dose not reach the desired value (0.001) and my history of residuals is as follows. can i set maximum residual tolerance to 0.1 and assume it reach the required convergence? as even this reach the 100000 iterations, this is exactly how residuals looks like.

thanks alot in advance

Centurion2011 · February 18, 2015, 07:19

something is obviously wrong

U.Sjug · February 18, 2015, 19:11

I looks like that the residual plot is vibrating.
I don't know why it happen in this case, but I think that you have to check mesh quality(aspect ratio,skewness .etc).
And other way, if you use the tetra mesh, please use hex mesh.
If you want more advise from other people, you write some setting and mesh data.

U.Sjug · February 18, 2015, 19:20

Sorry this is very old topic... I mistake.

February 18, 2015, 07:19		#2
Centurion2011 Member Join Date: Jul 2011 Posts: 78 Blog Entries: 1 Rep Power: 18	something is obviously wrong __________________ I'M NOT A GYNECOLOGIST BUT I'LL TAKE A LOOK.

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February 18, 2015, 19:11		#3
U.Sjug New Member Join Date: Dec 2014 Posts: 3 Rep Power: 11	I looks like that the residual plot is vibrating. I don't know why it happen in this case, but I think that you have to check mesh quality(aspect ratio,skewness .etc). And other way, if you use the tetra mesh, please use hex mesh. If you want more advise from other people, you write some setting and mesh data.

February 18, 2015, 19:20		#4
U.Sjug New Member Join Date: Dec 2014 Posts: 3 Rep Power: 11	Sorry this is very old topic... I mistake.