SimpleFoam How to specify density

sebastiank · October 31, 2008, 09:48

Hello,
how can I specify the density rho when I'm using the simpleFoam solver. I want to calculate water flowing through a pipe. I'm quite new to OpenFoam, I'm more used to Fluent.
When I would calculate the same Case in Fluent I would have to specify nu and rho.
My question is now:
Do I have to specify rho or is rho calculated by OpenFoam somehow ?

Regards,

Sebastian

gschaider · October 31, 2008, 10:16

There's not much in the FAQ, but this is:
http://openfoamwiki.net/index.php/Main_FAQ#Where_do_I_enter_the_fluid-density_fo r_icoFoam.2C_turbFoam_and_other_incompressible_sol vers.3F

sebastiank · October 31, 2008, 10:39

Thank you.

pranay10 · July 27, 2023, 10:45

Sir, I am trying to simulate non-newtonian fluids in openfoam. I have used power law.
However, I am confused as in how to specify density as it varies fluid to fluid.

October 31, 2008, 09:48	Hello, how can I specify the	#1
sebastiank New Member Sebastian Krick Join Date: Mar 2009 Posts: 9 Rep Power: 17	Hello, how can I specify the density rho when I'm using the simpleFoam solver. I want to calculate water flowing through a pipe. I'm quite new to OpenFoam, I'm more used to Fluent. When I would calculate the same Case in Fluent I would have to specify nu and rho. My question is now: Do I have to specify rho or is rho calculated by OpenFoam somehow ? Regards, Sebastian

October 31, 2008, 10:16	There's not much in the FAQ, b	#2
gschaider Assistant Moderator Bernhard Gschaider Join Date: Mar 2009 Posts: 4,225 Rep Power: 51	There's not much in the FAQ, but this is: http://openfoamwiki.net/index.php/Main_FAQ#Where_do_I_enter_the_fluid-density_fo r_icoFoam.2C_turbFoam_and_other_incompressible_sol vers.3F __________________ Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request

October 31, 2008, 10:39	Thank you.	#3
sebastiank New Member Sebastian Krick Join Date: Mar 2009 Posts: 9 Rep Power: 17	Thank you.

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July 27, 2023, 10:45		#4
pranay10 New Member Prayan Join Date: Jun 2023 Posts: 10 Rep Power: 3	Sir, I am trying to simulate non-newtonian fluids in openfoam. I have used power law. However, I am confused as in how to specify density as it varies fluid to fluid.