Axial 2D calculation in simpleFoam prblem with convergence

rybakov · May 11, 2005, 18:50

At first I make 2D planar case restangular geometry - everething OK.
Then I try to caclulate axial 2D geometry with help of simpleFoam (boundary condition is equivalent to planar). I use wedge, empty for axis etc., make with blockMesh geometry. (I can see it in paraFoam - everything is OK with geometry). But when I try to calculate, it don't converge. Some first steps are OK, then oops. I try to change relaxation factors - it is don't help.
In this case I see that program calculate Vz (but in 2D planar - don't).
Must I change some more parameters for axial case?

rybakov · May 12, 2005, 13:32

I have found where is the problem. As usually, it was _my_ mistake in geometry. Now evrerything convergenced.

hjasak · May 12, 2005, 13:39

Nice to hear that FOAM is doing what it is supposed to be doing. :-) If you can put a few details about how you found the error in geometry in a message, some future users may benefit from your experience (if applicable).

Thanks,

Hrv

thumthae · May 16, 2005, 03:00

Hi Andriy,

Could you tell me what is your mistake?
I ever try 2D axi-symetric case but it doesn't work.

If you can put detail, it will be useful for other FOAM user.

I agree with Hrv

Thanks

May 11, 2005, 18:50	At first I make 2D planar case	#1
rybakov New Member Andriy Rybakov Join Date: Mar 2009 Posts: 9 Rep Power: 17	At first I make 2D planar case restangular geometry - everething OK. Then I try to caclulate axial 2D geometry with help of simpleFoam (boundary condition is equivalent to planar). I use wedge, empty for axis etc., make with blockMesh geometry. (I can see it in paraFoam - everything is OK with geometry). But when I try to calculate, it don't converge. Some first steps are OK, then oops. I try to change relaxation factors - it is don't help. In this case I see that program calculate Vz (but in 2D planar - don't). Must I change some more parameters for axial case?

May 12, 2005, 13:32	I have found where is the prob	#2
rybakov New Member Andriy Rybakov Join Date: Mar 2009 Posts: 9 Rep Power: 17	I have found where is the problem. As usually, it was _my_ mistake in geometry. Now evrerything convergenced.

May 12, 2005, 13:39	Nice to hear that FOAM is doin	#3
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 33	Nice to hear that FOAM is doing what it is supposed to be doing. :-) If you can put a few details about how you found the error in geometry in a message, some future users may benefit from your experience (if applicable). Thanks, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

May 16, 2005, 03:00	Hi Andriy, Could you tell	#4
thumthae New Member Chalothon Thumthae Join Date: Mar 2009 Posts: 13 Rep Power: 17	Hi Andriy, Could you tell me what is your mistake? I ever try 2D axi-symetric case but it doesn't work. If you can put detail, it will be useful for other FOAM user. I agree with Hrv Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
SimpleFoam convergence problems	brahim	OpenFOAM Running, Solving & CFD	20	June 9, 2015 10:09
SimpleFoam Convergence problem	skabilan	OpenFOAM Running, Solving & CFD	6	May 31, 2013 04:21
SimpleFoam solution convergence pattern	philippose	OpenFOAM Running, Solving & CFD	0	June 26, 2008 15:18
Axial Velocity Calculation	Roux	CFX	0	May 12, 2008 10:37
SimpleFoam convergence problems	schnitzlein	OpenFOAM Running, Solving & CFD	6	June 24, 2005 10:51