Steam Mixture material for Wall condensation

coolcrasher · October 19, 2015, 04:56

Hi

I am looking for making a steam mixture ( variable composition ) to use it for modelling wall condensation model.

Steam mixture ( Air and Water vapour ) is to be modelled. The problem is how to select air and water vapour from list of materials.

My requirement is, at inlet the steam enters the fluid domain which is initially filled with air at 95 - 110 deg C.

For air I have many materials like Air Ideal gas, Air at 25 deg C and so on in the list of standard materials. Also for water vaper I have many models like Water Vapour at 100 C, Water Vapour at 25 C, H20 ( I found them in Std materials ccl under Interphase Mass transfer ).

I am confused which one of them to choose for my model. Of course how to model the material mixture after choosing them.

Please help me in choosing a material for my model. Question may be a silly one. Am new to using CFX, hence asking for help.

highorder_cfd · October 19, 2015, 06:12

Hi

Open the CFX Help and look at this tutorial:
Tutorial 26 Axial Turbine Equilibrium and Non-Equilibrium Steam Predictions.

It should clarify your queries.

coolcrasher · October 19, 2015, 09:23

Thank you for your reply.

I have got a steam mixture from wall_condensation.ccl given by ansys.

Presenlty working with it.

October 19, 2015, 04:56	Steam Mixture material for Wall condensation	#1
coolcrasher Member Sravan Kumar Join Date: May 2014 Posts: 57 Rep Power: 11	Hi I am looking for making a steam mixture ( variable composition ) to use it for modelling wall condensation model. Steam mixture ( Air and Water vapour ) is to be modelled. The problem is how to select air and water vapour from list of materials. My requirement is, at inlet the steam enters the fluid domain which is initially filled with air at 95 - 110 deg C. For air I have many materials like Air Ideal gas, Air at 25 deg C and so on in the list of standard materials. Also for water vaper I have many models like Water Vapour at 100 C, Water Vapour at 25 C, H20 ( I found them in Std materials ccl under Interphase Mass transfer ). I am confused which one of them to choose for my model. Of course how to model the material mixture after choosing them. Please help me in choosing a material for my model. Question may be a silly one. Am new to using CFX, hence asking for help.

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October 19, 2015, 06:12		#2
highorder_cfd Member Join Date: Jan 2015 Posts: 63 Rep Power: 11	Hi Open the CFX Help and look at this tutorial: Tutorial 26 Axial Turbine Equilibrium and Non-Equilibrium Steam Predictions. It should clarify your queries.

October 19, 2015, 09:23		#3
coolcrasher Member Sravan Kumar Join Date: May 2014 Posts: 57 Rep Power: 11	Thank you for your reply. I have got a steam mixture from wall_condensation.ccl given by ansys. Presenlty working with it.