# open channel modeling

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 December 8, 2011, 08:59 open channel modeling #1 New Member   masoud Join Date: Dec 2011 Posts: 3 Rep Power: 8 Hi I'm beginner in this software(ansys-cfx).i trying to model a compound channel and i having some problem in Boundary conditions.how i can model open channels? and how i can simulation two-phase stream? in my model, averaged velocity is 0.349 m/s and max velocity is 0.389 m/s. please help me. Thanks

 December 8, 2011, 17:31 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 14,195 Rep Power: 109 Have a look at the free surface flow over a bump tutorial to see how to set up free surface models.

December 10, 2011, 08:06
#3
New Member

masoud
Join Date: Dec 2011
Posts: 3
Rep Power: 8
Quote:
 Originally Posted by ghorrocks Have a look at the free surface flow over a bump tutorial to see how to set up free surface models.
Thanks
but where is this tutorial?
anybody else can't help me?

December 11, 2011, 19:08
#4
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Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 14,195
Rep Power: 109
It is tutorial number 9.

Quote:
 anybody else can't help me?
Isn't my assistance good enough for you?

December 13, 2011, 10:24
#5
New Member

masoud
Join Date: Dec 2011
Posts: 3
Rep Power: 8
Quote:
 Originally Posted by ghorrocks It is tutorial number 9. Isn't my assistance good enough for you?
Thanks dear ghorrocks i found it.
No, your help was very useful.
but for my modeling should i use those expression exactly (for open channel flows)?
I've a problem,in my modeling at the inlet boundary, height of water equal 0.08 m and also at the outlet boundary height of water is 0.08 m .
should i change these expression in this tutorial (tutorial number 9.)?
Thanks again

 December 13, 2011, 17:10 #6 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 14,195 Rep Power: 109 The tutorials give you an introduction to the field. You should be able to get your case working from there. If the tutorials are not sufficient for you then consider doing some CFX ANSYS training - have a look at the ANSYS website for training details.

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