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Old   January 9, 2016, 10:06
Default cfx turbulent model
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Dear all I have two questions:
1- I use CFX I want to use (RNG) model but I do not find it, fluent has this model but in cfx I can not find it.
2- from the upstream of my model (flow over spillway) I know height of water but I dont know velocity of inlet, what I should do?.
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Old   January 9, 2016, 13:51
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Try enabling the beta models
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Old   January 13, 2016, 23:47
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if you know the inlet and outlet pressure of your case you can solve it, you don't necessarily need to have the inlet velocity.
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Old   January 14, 2016, 01:52
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RNG - you might need the advanced turbulence license to access this. Do you have an advanced turbulence license option (or a full capability solver license)?

If you know the water height but not the flow then use a pressure boundary condition. Have a look at the CFX tutorials for how to implement pressure boundaries in free surface models.
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