1D Modelling of Mechanical Ventilation Network in OpenFOAM

charles4allme · May 15, 2018, 09:12

Hello,

I am running a fire simulation in a compartment and I would like to implement a ventilation model for the mechanical ventilation system.. I would like to use multiscale modelling method which means that I would represent the ventilation network with a 1D model. I am still a beginner with OpenFOAM and I would like to develop a 1D model for the ventilation network. Is that possible solely with OpenFOAM or woud I have to use another software to implement a 1D model and couple it with OpenFOAM.

piu58 · May 16, 2018, 00:51

In general, OF works with 3d (unavoidable). There exist a b.c. to reduce the complexity to 2 or (rarely used) 1 dimensions: empty. You need to use only 1 element in the dimension(s) you wish to suppress.

There are many examples for 2D, from which you may learn how to set an 1D geometry.

charles4allme · May 16, 2018, 07:51

@piu58: Thanks for your reply. Where can I find the examples for the 2D. Are they the ones in OpenFOAM tutorials? Am guessing it will still be possible to set a boundary condition that I would be using in the 1D model. When you say i need to only use 1 element in the dimensions I wish to suppress, am guessing you mean during setting up by mesh right?

Best regards

piu58 · May 16, 2018, 08:17

> examples for the 2D. Are they the ones in OpenFOAM tutorials?

Yes, I meant these.

> only use 1 element in the dimensions I wish to suppress, am guessing you mean during setting up by mesh right?

yes.

charles4allme · May 16, 2018, 10:25

Thanks a lot.

Is it also possible to create a solver that can solve the 1D geometry in OpenFOAM using the governing equations but for one dimensional case.

Thanks.

May 15, 2018, 09:12	1D Modelling of Mechanical Ventilation Network in OpenFOAM	#1
charles4allme Member Join Date: Feb 2018 Posts: 91 Rep Power: 8	Hello, I am running a fire simulation in a compartment and I would like to implement a ventilation model for the mechanical ventilation system.. I would like to use multiscale modelling method which means that I would represent the ventilation network with a 1D model. I am still a beginner with OpenFOAM and I would like to develop a 1D model for the ventilation network. Is that possible solely with OpenFOAM or woud I have to use another software to implement a 1D model and couple it with OpenFOAM.

May 16, 2018, 00:51		#2
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	In general, OF works with 3d (unavoidable). There exist a b.c. to reduce the complexity to 2 or (rarely used) 1 dimensions: empty. You need to use only 1 element in the dimension(s) you wish to suppress. There are many examples for 2D, from which you may learn how to set an 1D geometry. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

May 16, 2018, 08:17		#4
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	> examples for the 2D. Are they the ones in OpenFOAM tutorials? Yes, I meant these. > only use 1 element in the dimensions I wish to suppress, am guessing you mean during setting up by mesh right? yes. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Frequently Asked Questions about Installing OpenFOAM	wyldckat	OpenFOAM Installation	3	November 14, 2023 11:58
Modelling a Canopy in OpenFOAM	jhart3000	OpenFOAM	0	November 29, 2016 14:09
Portable openFOAM on Windows (7) school network	peterfagg	OpenFOAM Installation	2	January 24, 2013 03:28
New OpenFOAM Forum Structure	jola	OpenFOAM	2	October 19, 2011 06:55
Cross-compiling OpenFOAM 1.7.0 on Linux for Windows 32 and 64bits with Mingw-w64	wyldckat	OpenFOAM Announcements from Other Sources	3	September 8, 2010 06:25

May 16, 2018, 07:51		#3
charles4allme Member Join Date: Feb 2018 Posts: 91 Rep Power: 8	@piu58: Thanks for your reply. Where can I find the examples for the 2D. Are they the ones in OpenFOAM tutorials? Am guessing it will still be possible to set a boundary condition that I would be using in the 1D model. When you say i need to only use 1 element in the dimensions I wish to suppress, am guessing you mean during setting up by mesh right? Best regards

May 16, 2018, 10:25		#5
charles4allme Member Join Date: Feb 2018 Posts: 91 Rep Power: 8	Thanks a lot. Is it also possible to create a solver that can solve the 1D geometry in OpenFOAM using the governing equations but for one dimensional case. Thanks.