Coupled solving of a model in CFX

bfmoura · March 18, 2013, 15:05

hi people,

I'm trying to model a coupled variable in CFX with the additional variable in a fluid.

Let's say that the variable called y is a function of concentration of the additional variable near the wall, y = f (C nw)

So, this y is used to calculate the resistance of the mass transfer so a new value of C is obtained and used to recalculate y.

Is there a way to implement this coupled variable in CFX?

Thanks in advance!!

ghorrocks · March 19, 2013, 04:35

This may create convergence difficulties, but this model should be simple to implement.

bfmoura · March 19, 2013, 12:20

Will I need CEL to implement?

ghorrocks · March 19, 2013, 17:33

Yes, CEL and a few additional variables. The coupling is handled by CFX and hopefully convergence will still be OK with it.

March 18, 2013, 15:05	Coupled solving of a model in CFX	#1
bfmoura New Member Join Date: Sep 2012 Posts: 7 Rep Power: 13	hi people, I'm trying to model a coupled variable in CFX with the additional variable in a fluid. Let's say that the variable called y is a function of concentration of the additional variable near the wall, y = f (C nw) So, this y is used to calculate the resistance of the mass transfer so a new value of C is obtained and used to recalculate y. Is there a way to implement this coupled variable in CFX? Thanks in advance!!

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March 19, 2013, 04:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	This may create convergence difficulties, but this model should be simple to implement.

March 19, 2013, 12:20		#3
bfmoura New Member Join Date: Sep 2012 Posts: 7 Rep Power: 13	Will I need CEL to implement?

March 19, 2013, 17:33		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Yes, CEL and a few additional variables. The coupling is handled by CFX and hopefully convergence will still be OK with it.