p_rgh in buoyantSimpleFoam

camoesas · November 8, 2011, 11:24

Hello Everybody,

I am trying to set up a case for buoyantSimpleFoam - Solver.
But it forces me to specify a variable called p_rgh.

What is p_rgh? I cannot find any information, how to specify this variable.

Any Help appreciated!

Thanks Camoesas

Amir · November 8, 2011, 12:21

Hi,

p_rgh = p - rho*gh .... you can find its definition in createFields.H file.

Bests,

camoesas · November 9, 2011, 02:25

HI,

thanks for the definition. But this doesnt help me to understand whats p_rgh good for. How can I calculate my initial values? Where can I find which boundary conditions do I have to set?

akidess · November 9, 2011, 04:17

Have a look at this thread: http://www.cfd-online.com/Forums/ope...rgh-1-7-a.html

November 8, 2011, 11:24	p_rgh in buoyantSimpleFoam	#1
camoesas Senior Member Join Date: Mar 2009 Posts: 138 Rep Power: 17	Hello Everybody, I am trying to set up a case for buoyantSimpleFoam - Solver. But it forces me to specify a variable called p_rgh. What is p_rgh? I cannot find any information, how to specify this variable. Any Help appreciated! Thanks Camoesas __________________ OF - 2.0.0

November 8, 2011, 12:21		#2
Amir Senior Member Amir Join Date: May 2009 Location: Montreal, QC Posts: 735 Blog Entries: 1 Rep Power: 22	Hi, p_rgh = p - rhogh .... you can find its definition in createFields.H file. Bests, __________________ Amir*

November 9, 2011, 02:25		#3
camoesas Senior Member Join Date: Mar 2009 Posts: 138 Rep Power: 17	HI, thanks for the definition. But this doesnt help me to understand whats p_rgh good for. How can I calculate my initial values? Where can I find which boundary conditions do I have to set? __________________ OF - 2.0.0

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November 9, 2011, 04:17		#4
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	Have a look at this thread: http://www.cfd-online.com/Forums/ope...rgh-1-7-a.html