Species tab not enabled for providing mass fraction

SAM S · April 11, 2016, 05:43

Hi, I am using species transport model and volumetric reaction with finite rate mechanism. In the boundary conditions only momentum and thermal tabs are active for use but species tab I could not use. What is the problem with my set up. Can anyone please help me.

ehsan120 · May 8, 2020, 19:07

Hi,

Anybody found an answer to this? I have the same problem sometimes, i.e. the species tab is not active even if I have turned on the species models.

Thanks

vinerm · May 9, 2020, 07:57

Even if species transport is enabled, cell zones can have pure fluids. And the boundaries of cell zones with pure fluids cannot have species. So, go to cell zones and assign the mixture as material.

April 11, 2016, 05:43	Species tab not enabled for providing mass fraction	#1
SAM S Member Join Date: Oct 2015 Posts: 34 Rep Power: 11	Hi, I am using species transport model and volumetric reaction with finite rate mechanism. In the boundary conditions only momentum and thermal tabs are active for use but species tab I could not use. What is the problem with my set up. Can anyone please help me.

May 8, 2020, 19:07	what was the reason?	#2
ehsan120 New Member Join Date: Apr 2020 Posts: 12 Rep Power: 6	Hi, Anybody found an answer to this? I have the same problem sometimes, i.e. the species tab is not active even if I have turned on the species models. Thanks

May 9, 2020, 07:57	Species Tab	#3
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	Even if species transport is enabled, cell zones can have pure fluids. And the boundaries of cell zones with pure fluids cannot have species. So, go to cell zones and assign the mixture as material. ehsan120 likes this. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Mass fraction of species (Y) in reacting solvers	mike.franky	OpenFOAM Running, Solving & CFD	9	February 9, 2023 07:49
reactingFoam species are molar fraction or mass fraction?	prasa	OpenFOAM Running, Solving & CFD	2	March 17, 2016 03:35
species transport-wavelike tail (mass fraction)	Lilly	FLUENT	0	December 7, 2012 10:45
chemical species mass fraction	Green_Horn	STAR-CD	0	February 27, 2012 15:57
mass fraction of species	Ahmed	FLUENT	0	April 18, 2007 12:57