Water injection

Reza_computational · October 28, 2010, 10:18

Hello dear members
I want to setup and run a problem in CFX 12, the problem is hot air flow in a duct in which the water is sprayed into the flow, air temperature is almost 600C and water is 30C. I need to setup the problem in a way that can capture the water evaporation and I want to know how this is possible using Continueos fluid-dispersed fluid? I dont want to use Lagrangian particle transport simulation coz I really dont need that exact and detailed solutuin of water droplets, Average quantities can be enough!
If anyone knows how to capture water evaporation in Cont. Fluid|Dispersed Fluid pairs I will appreciate to tell me how??
Thanks in advance...
Reza

ghorrocks · October 28, 2010, 19:21

Yes, this can be done. Here are some tutorial examples which may be of interest, they describe a few approaches to eularian/eularian models.

Drop Curve for Cavitating Flow in a Pump
Axial Turbine Equilibrium and Non-Equilibrium Steam Predictions
Cavitation Around a Hydrofoil

CFX support may have some examples which are closer to what you are doing.

October 28, 2010, 10:18	Water injection	#1
Reza_computational New Member Join Date: May 2010 Location: Tehran, Iran Posts: 20 Rep Power: 16	Hello dear members I want to setup and run a problem in CFX 12, the problem is hot air flow in a duct in which the water is sprayed into the flow, air temperature is almost 600C and water is 30C. I need to setup the problem in a way that can capture the water evaporation and I want to know how this is possible using Continueos fluid-dispersed fluid? I dont want to use Lagrangian particle transport simulation coz I really dont need that exact and detailed solutuin of water droplets, Average quantities can be enough! If anyone knows how to capture water evaporation in Cont. Fluid\|Dispersed Fluid pairs I will appreciate to tell me how?? Thanks in advance... Reza

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October 28, 2010, 19:21		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,854 Rep Power: 144	Yes, this can be done. Here are some tutorial examples which may be of interest, they describe a few approaches to eularian/eularian models. Drop Curve for Cavitating Flow in a Pump Axial Turbine Equilibrium and Non-Equilibrium Steam Predictions Cavitation Around a Hydrofoil CFX support may have some examples which are closer to what you are doing.