nu in cavity example

MaaadBob · September 21, 2011, 18:55

Hi everyone,

Just to warn you, I'm a complete CFD noob.

Looking over transportProperties file in the cavity example, what do the seven values within the square brackets represent in "nu [ 0 2 -1 0 0 0 0 ] 0.01;" ?

I see there are also seven-value 'dimensions' entries in the 0/U and 0/P files. Are these related to the nu entry above ?

Thanks,
Bob.

anon_a · September 22, 2011, 07:14

Hey Bob

The answer is in section 2.1.1.3 "Physical properties" of the user guide.
http://www.openfoam.com/docs/user/cavity.php
These are the physical units (m^2 / sec)

MaaadBob · September 22, 2011, 07:46

No, section 2.1.1.3 only details the kinematic viscosity value.

My question was, with the line "nu [ a b c d e f g ] 0.01", what does a -> g mean ?

I do appreciate your help though, so please bear with me.

Bob.

MaaadBob · September 22, 2011, 08:05

Found it ! Under section 4.2.6

Classic case of RTFM !

September 21, 2011, 18:55	nu in cavity example	#1
MaaadBob New Member Bob Beattie Join Date: Sep 2011 Location: Hampshire, UK Posts: 3 Rep Power: 14	Hi everyone, Just to warn you, I'm a complete CFD noob. Looking over transportProperties file in the cavity example, what do the seven values within the square brackets represent in "nu [ 0 2 -1 0 0 0 0 ] 0.01;" ? I see there are also seven-value 'dimensions' entries in the 0/U and 0/P files. Are these related to the nu entry above ? Thanks, Bob.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Urgent: Unsteady 3-D supersonic cavity flow	Min-Sung Kang	FLUENT	3	April 6, 2014 09:50
is there any parallel code for the famous Lid Driven Cavity flow?	gholamghar	Main CFD Forum	0	August 1, 2010 01:55
cavity in flat plate and drag prediction	Far	FLUENT	0	May 19, 2010 14:47
drag of flat plate with cavity	Far	FLUENT	0	May 18, 2010 04:57
axisymmetric model of two rotating disks cavity	liaolingling	FLUENT	0	April 27, 2005 04:24

September 22, 2011, 07:14		#2
anon_a Disabled Join Date: Mar 2011 Posts: 174 Rep Power: 15	Hey Bob The answer is in section 2.1.1.3 "Physical properties" of the user guide. http://www.openfoam.com/docs/user/cavity.php These are the physical units (m^2 / sec)

September 22, 2011, 07:46		#3
MaaadBob New Member Bob Beattie Join Date: Sep 2011 Location: Hampshire, UK Posts: 3 Rep Power: 14	No, section 2.1.1.3 only details the kinematic viscosity value. My question was, with the line "nu [ a b c d e f g ] 0.01", what does a -> g mean ? I do appreciate your help though, so please bear with me. Bob.

September 22, 2011, 08:05		#4
MaaadBob New Member Bob Beattie Join Date: Sep 2011 Location: Hampshire, UK Posts: 3 Rep Power: 14	Found it ! Under section 4.2.6 Classic case of RTFM !