# Annular flow in pipe

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 March 19, 2007, 10:20 Annular flow in pipe #1 dusky.He Guest   Posts: n/a Is there any general way to model the annular flow in a pipe? Does anyone can give me some hint? Thanks a lot

 March 19, 2007, 10:25 Re: Annular flow in pipe #2 George Guest   Posts: n/a You mean using 2D-axisymmetric coordinates? You can solve for the third momentum equation, but taking into consideration that the annular pressure gradient is zero. Can you give me some more details?

 March 19, 2007, 10:39 Re: Annular flow in pipe #3 qunwuhe Guest   Posts: n/a What is the third momentum equation?

 March 21, 2007, 07:49 Re: Annular flow in pipe #4 George Guest   Posts: n/a First is the axial velocity, second the radial and third the angular velocity. In axisymmetric flows the third is considered to be zero o just its pressure gradient to be zero.

 March 21, 2007, 10:09 Re: Annular flow in pipe #5 qunwuhe Guest   Posts: n/a Yes I take an assumption that the flow is axisymmetric

February 10, 2012, 17:22
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crane
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Quote:
 Originally Posted by dusky.He ;48541 Is there any general way to model the annular flow in a pipe? Does anyone can give me some hint? Thanks a lot
hii
I found toroidal coordinate being used for annular curved pipe.
In that article there were some references for annular pipe itself
This is the name of article.look for it in science direct
a numerical analysis of developing flow and heat transfer in a curved annular pipe
hope this could help

 February 15, 2012, 14:01 #7 New Member   Victor Azevedo Join Date: Aug 2010 Posts: 5 Rep Power: 8 I don't if this will help or not. But, a good way to model is to separate the annular flow in 2 models: the core, and the film. You can run the film model and use its variables in the core model.

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