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October 15, 2003, 09:42 
How do I use the axisymmetric model?

#1 
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Dear all: Recently, I am trying to use the aximsymmetric model to solve an unsteady state problem but I just fail. The console window told me that the xmomentum diverge as soon as I started the program. I even tried to initalize the radial velocity with a nonzero number but got the same result. Did I do anything wrong?


October 15, 2003, 10:49 
Re: How do I use the axisymmetric model?

#2 
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Hi
One of the reasons is: Did u make sure that ur axis of symmetry is 'XAxis' ? and, there should not be any cells below the xaxis, ?? Chendhil. 

October 16, 2003, 06:29 
Re: How do I use the axisymmetric model?

#3 
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mmm, I set the xaxis as the radial axis and yaxis is the axis of symmetry. Is it necessary to set the yaxis as symmetry axis? Besides, do you mean that I have to establish the model geometry in the positive coordinate value?


October 16, 2003, 08:43 
Re: How do I use the axisymmetric model?

#4 
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the xaxis must be the axis of symmetry and the y axis must be the radial axis


October 18, 2003, 03:19 
Re: How do I use the axisymmetric model?

#5 
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Thank you very much. It could work well now.


July 30, 2011, 07:21 

#6 
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soroush.armd@yahoo.com
Join Date: Jul 2011
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hi,i have a question about axisymmetric model,there are some options in boundry pannel to assign velocity in both axisymmetric and axisymmetric swirl model,what is difference btw those?


August 1, 2011, 09:23 

#7 
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JP
Join Date: Mar 2009
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Axisymmetric model is used when the geometry is axisymmetric (for example, flow through a pipe, where you can model just a 2D halfsection of the pipe). Here, there is no flow in the zaxis.
In axisymmetric swirl, there is swirling flow in the zaxis (normal to the geometry plane). For example, liquid swirling in a circular vessel. 

August 3, 2011, 08:15 

#8  
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zino
Join Date: Mar 2010
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if xaxis is at 0,0,0 location then turing that boundary to symmetry gives warning msg and by translating axis it produces wrong results. can you tell me in that case what should I do?
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