Velocity, Porous Domain

Saleeman1234 · September 19, 2014, 10:44

Hello

I have a porous domain with a mass and energy sources. I am interested in velocity in my system. the velocity is changing with change in mass of the system (addition or subtraction). but I want to make it follow my CCL. which is

V(x,y,z) = Constant/(Water.Viscosity)* pabs.Gradient(x,y,z)

How it would be able to follow some CCL or expression?

ghorrocks · September 20, 2014, 06:14

I do not understand what you are trying to do. Are you trying to make the flow move at the velocity you describe or are you trying to read the velocity from a simulation? Or is it something else?

Saleeman1234 · September 22, 2014, 03:20

Thanks Ghorrocks

I want flow(velocity) according to my described CCL. but velocity is following the Mass Source.(Mass reduction & Addition). Can you recommend me a document which can give me details of Velocity in CFX, like how it calculates it? upon which parameters it depends?

Thank you once again

ghorrocks · September 22, 2014, 06:10

This is all described in the CFX documentation. You need mass and momentum source terms to do the addition/subtraction of stuff. Also if you are modelling a porous material then have a look at the porous models built into CFX.

Saleeman1234 · September 22, 2014, 06:22

Thanks Ghorrocks

I will try and then discuss.

September 19, 2014, 10:44	Velocity, Porous Domain	#1
Saleeman1234 Member Mansoor Saleem Join Date: Jun 2014 Posts: 31 Rep Power: 11	Hello I have a porous domain with a mass and energy sources. I am interested in velocity in my system. the velocity is changing with change in mass of the system (addition or subtraction). but I want to make it follow my CCL. which is V(x,y,z) = Constant/(Water.Viscosity)* pabs.Gradient(x,y,z) How it would be able to follow some CCL or expression?

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September 20, 2014, 06:14		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	I do not understand what you are trying to do. Are you trying to make the flow move at the velocity you describe or are you trying to read the velocity from a simulation? Or is it something else?

September 22, 2014, 03:20		#3
Saleeman1234 Member Mansoor Saleem Join Date: Jun 2014 Posts: 31 Rep Power: 11	Thanks Ghorrocks I want flow(velocity) according to my described CCL. but velocity is following the Mass Source.(Mass reduction & Addition). Can you recommend me a document which can give me details of Velocity in CFX, like how it calculates it? upon which parameters it depends? Thank you once again

September 22, 2014, 06:10		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	This is all described in the CFX documentation. You need mass and momentum source terms to do the addition/subtraction of stuff. Also if you are modelling a porous material then have a look at the porous models built into CFX.

September 22, 2014, 06:22		#5
Saleeman1234 Member Mansoor Saleem Join Date: Jun 2014 Posts: 31 Rep Power: 11	Thanks Ghorrocks I will try and then discuss.