# CEL problem

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 August 15, 2011, 09:01 CEL problem #1 New Member   tao Join Date: Jul 2011 Posts: 5 Rep Power: 7 Dear all, I use the eulerian-eulerian two phase model and treat both the water and air phase as continuous phase in my simulation,then I want to use the following drag correlation.Now I don't know how can I realize it.I want to use CEL but i can't find where to define the VS(superficial gas velocity).thanks a lot! CD=(3(ρL-ρG)/4ρL)gdG(rG/VS)2 Last edited by rainning139; August 15, 2011 at 09:37.

 August 15, 2011, 13:46 #2 Member   sajad Join Date: Nov 2010 Posts: 51 Rep Power: 7 hi rainining. define a new expression then make a right click and in the part of "variables" in the menu of "specific heat capacity at constant volume" you can find "superficial velocity" . is it what you want? i hope i could help you.

 August 15, 2011, 21:57 #3 New Member   tao Join Date: Jul 2011 Posts: 5 Rep Power: 7 Thanks for your answer, I have found the superficial velocity(X,Y,Z) according to your answer,but I have no idea about which phase the superficial velocity stands for, GAS or LIQUID ,because I use the multiphase model.HOPE FOR YOUR ANSWER ,thanks.

 August 16, 2011, 08:05 #4 Member   sajad Join Date: Nov 2010 Posts: 51 Rep Power: 7 you can find the definition and folmulation of this variable in CFX.help or by search in google

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