how to define a mixture in FLUENT

wildli · December 14, 2009, 22:07

Hello, guys,
I am trying to simulate an axial compressor to compress a mixture of CO2 and water vapor, but have little idea how to set them up in FLUENT. Basically I know the mixture's mass fraction or Cp(with idea gas density), how can I set it in FLUENT?
Any hint would be highly appreciated.
thanks.

alidogrul · February 23, 2010, 13:08

I think you can patch both of the fluids before the analysis as an initial condition, and I can say that it doesn't differ you solve it steady or unsteady.

coalgas · February 23, 2010, 21:12

You can firstly select species from Fluid i.e. CO2 and H2O from Material panel. Then from same material panel create a mixture , add those species in mixture. And finally, you can patch them from solution panel after initialization of your model.

sukhvinder singh · July 2, 2011, 04:29

Quote:

Originally Posted by coalgas

You can firstly select species from Fluid i.e. CO2 and H2O from Material panel. Then from same material panel create a mixture , add those species in mixture. And finally, you can patch them from solution panel after initialization of your model.

sir,

i have to measure the pressure drop in pipe, in this pipe the flowing fluid is a mixture of pulverised coal & air...

i am not familiar wid the creation of a new mixture in fluent..
so please help me n reply wid a sequence of steps if this thig is known to you...

thanx in advance,,

hesamna · January 24, 2021, 17:42

In Eulerian transient model with species transport (non-reaction), I want to make two mixture material phases . From model >> species I selected the mixture template for phase 1 but I am confused how I can make another mixture material (for phase 2). Do I have to select a pre defined mixture form species phase property (like benzene -air ) and then modify it (delete species of pre defined mixture and add new desired species). Is there any other straight way like what I did for phase 1?

Thanks for your time.

December 14, 2009, 22:07	how to define a mixture in FLUENT	#1
wildli New Member wild Join Date: Dec 2009 Posts: 11 Rep Power: 16	Hello, guys, I am trying to simulate an axial compressor to compress a mixture of CO2 and water vapor, but have little idea how to set them up in FLUENT. Basically I know the mixture's mass fraction or Cp(with idea gas density), how can I set it in FLUENT? Any hint would be highly appreciated. thanks.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
To define Moist Air in Fluent	JW	FLUENT	7	April 29, 2015 05:18
Wall temperature define in fluent	zdz198728	Main CFD Forum	3	November 19, 2009 00:37
REAL GAS UDF	brian	FLUENT	6	September 11, 2006 08:23
To define Moist Air in Fluent	JW	FLUENT	1	April 15, 2006 17:31
Mixture model in FLUENT 6.0	Siva	FLUENT	0	March 24, 2004 03:39

February 23, 2010, 13:08		#2
alidogrul New Member alidogrul Join Date: Feb 2010 Location: Turkiye Posts: 13 Rep Power: 16	I think you can patch both of the fluids before the analysis as an initial condition, and I can say that it doesn't differ you solve it steady or unsteady.

February 23, 2010, 21:12		#3
coalgas Member chétan Join Date: May 2009 Location: Australia Posts: 55 Rep Power: 16	You can firstly select species from Fluid i.e. CO2 and H2O from Material panel. Then from same material panel create a mixture , add those species in mixture. And finally, you can patch them from solution panel after initialization of your model.

January 24, 2021, 17:42		#5
hesamna New Member hesam Join Date: Jul 2020 Posts: 6 Rep Power: 5	In Eulerian transient model with species transport (non-reaction), I want to make two mixture material phases . From model >> species I selected the mixture template for phase 1 but I am confused how I can make another mixture material (for phase 2). Do I have to select a pre defined mixture form species phase property (like benzene -air ) and then modify it (delete species of pre defined mixture and add new desired species). Is there any other straight way like what I did for phase 1? Thanks for your time.