reactingTwoPhaseEulerFoam mass transfer (evaporation)

ssitank · March 30, 2021, 10:52

Hi foamers,

I am currently running the evaporation simulation using reactingTwoPhaseEulerFoam. So basically, mass is transfered (evaporating) from water source into air-vapour mixture.
I am using v1912 for the simulation.

Since I woud like to investigate the local or cell evaporation rate, can I display or make a whole field of mass transfer rate in each cell?

Do you think, I can do that with writeObject function or one must somehow modify the source code?

Thank you for any comments regarding this.
-JungHoon

HPE · March 30, 2021, 11:46

Don't know the answer to your question, my apologies.
But, just wanted to draw your attention regarding the reactingTwoPhaseEulerFoam solver, which had a bug.

I would use the fix in the solver just in case:
org: https://bugs.openfoam.org/view.php?id=3634
com: https://develop.openfoam.com/Develop...e_requests/438

ssitank · March 31, 2021, 02:40

Hi,

thank you so much for your bug information. It is quite a newly found one...

I am little bit of confused regarding the versions OF.

Well, I am currently using v1912 and I have some options like v17xx v18xx or v2006 or v2021 in my cluster.

How are these different from OF-4 OF-5 OF-6 or OF-7,8?

If you can I can get some idea which one to use...

Thanks in advance for real!

Regards

Artur.Ant · December 13, 2021, 02:30

I’m not an expert but I used several versions of OF so speaking from my experience:
Try to use the latest version because it contains new implementations and some bugs are fixed.
If you compare version 2021 with openfoam9 (these two were published in the same year) they are very similar. But I noticed that in some cases v2021 (or previous years) seem to have some functions that are not implemented in openfoam9 (or previous versions). Usually some post processing function is missing or some meshing tools.
I hope someone can give us a more complete answer

March 30, 2021, 10:52	reactingTwoPhaseEulerFoam mass transfer (evaporation)	#1
ssitank New Member JungHoon Lee Join Date: Apr 2019 Posts: 8 Rep Power: 7	Hi foamers, I am currently running the evaporation simulation using reactingTwoPhaseEulerFoam. So basically, mass is transfered (evaporating) from water source into air-vapour mixture. I am using v1912 for the simulation. Since I woud like to investigate the local or cell evaporation rate, can I display or make a whole field of mass transfer rate in each cell? Do you think, I can do that with writeObject function or one must somehow modify the source code? Thank you for any comments regarding this. -JungHoon

March 30, 2021, 11:46		#2
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 932 Rep Power: 12	Don't know the answer to your question, my apologies. But, just wanted to draw your attention regarding the reactingTwoPhaseEulerFoam solver, which had a bug. I would use the fix in the solver just in case: org: https://bugs.openfoam.org/view.php?id=3634 com: https://develop.openfoam.com/Develop...e_requests/438 ssitank likes this. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
UDF for evaporation mass transfer	vidyadhar	Fluent UDF and Scheme Programming	0	November 2, 2018 07:25
Evaporation model to evaluate the mass transfer between water and air	Filo82	CFX	1	June 27, 2018 03:05
Eulerian Multiphase Interfacial Species Mass Transfer	thomasduffy001_	Fluent Multiphase	1	October 3, 2017 07:21
Interphase mass transfer of a reaction	cfx_ws1992	Main CFD Forum	0	May 15, 2017 21:42
How to calculate Volumetric Mass transfer coefficient using CFX?	tuks_123	CFX	2	July 22, 2010 01:15

March 31, 2021, 02:40		#3
ssitank New Member JungHoon Lee Join Date: Apr 2019 Posts: 8 Rep Power: 7	Hi, thank you so much for your bug information. It is quite a newly found one... I am little bit of confused regarding the versions OF. Well, I am currently using v1912 and I have some options like v17xx v18xx or v2006 or v2021 in my cluster. How are these different from OF-4 OF-5 OF-6 or OF-7,8? If you can I can get some idea which one to use... Thanks in advance for real! Regards

December 13, 2021, 02:30		#4
Artur.Ant Member Arthur Join Date: Aug 2014 Location: Italy Posts: 47 Rep Power: 11	I’m not an expert but I used several versions of OF so speaking from my experience: Try to use the latest version because it contains new implementations and some bugs are fixed. If you compare version 2021 with openfoam9 (these two were published in the same year) they are very similar. But I noticed that in some cases v2021 (or previous years) seem to have some functions that are not implemented in openfoam9 (or previous versions). Usually some post processing function is missing or some meshing tools. I hope someone can give us a more complete answer