Over constrained Boundary Conditions

saisanthoshm88 · June 3, 2011, 04:12

Can some one please tell me if it is a over constrained approach to specify both volumetric flow rate and pressure on a inlet boundary

kambireddy · June 3, 2011, 06:13

yes, absolutely it is over constrained approach. moreover, its not possible to given two boundary conditions at one side.

May i know where you want to use?

saisanthoshm88 · June 3, 2011, 08:57

Hi,

Can you please tell me how to calculate pressure over the inlet given the volume flow rate and the fluid used being Air

kambireddy · June 3, 2011, 12:15

you can calculate velocity for given flow rate. then calculate total pressure over surface by using static pressure plus dynamic pressure.

Still, u had not in circle, describe your problem in detail..

June 3, 2011, 04:12	Over constrained Boundary Conditions	#1
saisanthoshm88 Senior Member --------- Join Date: Oct 2010 Posts: 303 Rep Power: 18	Can some one please tell me if it is a over constrained approach to specify both volumetric flow rate and pressure on a inlet boundary __________________ Best regards, Santhosh.

June 3, 2011, 08:57		#3
saisanthoshm88 Senior Member --------- Join Date: Oct 2010 Posts: 303 Rep Power: 18	Hi, Can you please tell me how to calculate pressure over the inlet given the volume flow rate and the fluid used being Air __________________ Best regards, Santhosh.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Impinging Jet Boundary Conditions	Anindya	Main CFD Forum	25	February 27, 2016 13:58
symmetry boundary conditions in cfx	lost.identity	CFX	41	May 22, 2013 08:21
OpenFOAM Variable Velocity Boundary Conditions	NickolasPl	OpenFOAM Programming & Development	2	May 19, 2011 06:37
[Netgen] boundary conditions and mesh exporting	vaina74	OpenFOAM Meshing & Mesh Conversion	2	May 27, 2010 10:38
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues	michele	OpenFOAM Meshing & Mesh Conversion	2	July 15, 2005 05:15

June 3, 2011, 06:13		#2
kambireddy New Member Redddy Join Date: Sep 2010 Posts: 25 Rep Power: 16	yes, absolutely it is over constrained approach. moreover, its not possible to given two boundary conditions at one side. May i know where you want to use?

June 3, 2011, 12:15		#4
kambireddy New Member Redddy Join Date: Sep 2010 Posts: 25 Rep Power: 16	you can calculate velocity for given flow rate. then calculate total pressure over surface by using static pressure plus dynamic pressure. Still, u had not in circle, describe your problem in detail..