Calculation of mass flow rate through a plane

titio · July 2, 2010, 15:00

Dear Foamers,

Is there any way of calculating the mass flow rate through a given plane of the mesh that is not a patch boundary. I found in the forum the calcMassFlow utility, but I have some doubts if I can use for a non patch plane.

My idea was to use the simpleFunctionObjects in the controlDict file, but I do not understand what function should I use.

Also, is it possible to calculate two values of flow rate and then calculate the value of a parameter, all defined in the controlDict file? I believe this is better done in the code, right?

Anyone can help me out here?

António Martins

robingilbert · September 27, 2010, 17:55

Hi titio,

Did you figure out how to calculate the mass flow-rate through a non patch plane?

robingilbert · September 28, 2010, 01:28

I just now figured it out. if anybody is interested, they can use swak4Foam by
Bernhard Gschaider. here is the link:
it has a tutorial for angled duct which shows how it is done.

http://openfoamwiki.net/index.php/Contrib/swak4Foam

July 2, 2010, 15:00	Calculation of mass flow rate through a plane	#1
titio Senior Member Antonio Martins Join Date: Mar 2009 Location: Porto, Porto, Portugal Posts: 112 Rep Power: 17	Dear Foamers, Is there any way of calculating the mass flow rate through a given plane of the mesh that is not a patch boundary. I found in the forum the calcMassFlow utility, but I have some doubts if I can use for a non patch plane. My idea was to use the simpleFunctionObjects in the controlDict file, but I do not understand what function should I use. Also, is it possible to calculate two values of flow rate and then calculate the value of a parameter, all defined in the controlDict file? I believe this is better done in the code, right? Anyone can help me out here? António Martins

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Mass flow rate: calculation v/s computation	beguxa	FLUENT	5	December 2, 2018 22:02
UDF to measure Mass Flow Rate	a.lynchy	Fluent UDF and Scheme Programming	31	October 4, 2018 15:10
The reporting of mass flow rate	summer	FLUENT	1	July 12, 2007 10:35
Target mass flow rate	Saturn	FLUENT	0	December 10, 2004 05:18
mass flow inlet	Denis Tschumperle	FLUENT	7	August 9, 2000 03:19

September 27, 2010, 17:55		#2
robingilbert Member Robin Gilbert Join Date: Jan 2010 Posts: 66 Rep Power: 16	Hi titio, Did you figure out how to calculate the mass flow-rate through a non patch plane?

September 28, 2010, 01:28		#3
robingilbert Member Robin Gilbert Join Date: Jan 2010 Posts: 66 Rep Power: 16	I just now figured it out. if anybody is interested, they can use swak4Foam by Bernhard Gschaider. here is the link: it has a tutorial for angled duct which shows how it is done. http://openfoamwiki.net/index.php/Contrib/swak4Foam