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Special Interest Group on General Chemistry/Thermo Group Forum: This group is covering general topics related to chemical reactions and thermodynamic applications. You can use it for general topics and to find people with common interests to found more specialized goups.
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TOPIC: Laminar Diffusion In OpenFOAM®
#209
Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
Hi everyone,
Valerio Novaresio and his team have developed a laminar diffusion library. I'd like to refer you to this thread where Valerio was kind enough to find me and comment on what I was looking to do:

www.extend-project.de/component/kunena/1...tion-in-reactingfoam

Let us post to this thread regarding any uses of Valerio and Co's code as well as any development for us laminar reaction people.

have a great day,
Ryan
Ryan Johnson
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#210
Re:Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
Hello,

I am also interested on the development of laminar diffusion in OpenFOAM®.

I have developed a initial solver for multicomponent mass transport with Fickian diffusion model based on the scalarTransportFoam and PrtList's.

Now I am working on the code extension to Maxwell-Stefan but I am not considering reactions.

I am currently dedicating some time to figure out the best way to use the thermophysical library in this problem and I really would like to hear you thoughts on that.

Regards,

Livia Jatobá
Livia Flavia Carletti Jatobá
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Gender: Female liviajatoba@hotmail.com Location: Rio de Janeiro/Brazil Birthday: 11/29
Livia Flavia Carletti Jatobá
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#211
Re:Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
I am also studing the changes on the thermophysical library in the OpenFOAM® 2.0 version.

It seems that the changes gave a really better sintax to the thermophysicalProperties dictionary. The question now is to keep the development on the 1.6 extended version or use the 2.0 version...

Regards,

Livia Jatobá
Livia Flavia Carletti Jatobá
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Last Edit: 2011/06/29 19:39 By liviajatoba.
Livia Flavia Carletti Jatobá
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#212
Re:Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
Hi Livia!
I am excited to see you have joined the laminar reacting efforts on OpenFOAM® ext.

The themodynamic data has been a tough obsticale for me, it would be really nice if I could use something like Chemkin in openFOAM to continously update the solvers, but I believe it is more complicated than that.

There are efforts involved in OpenFOAM® 1.5 to use cantera in OpenFOAM® and that group seems to have had some significant progress. I have yet to investigate the 1.5 cantera version, as I am running on 1.7 (recompiling all of OpenFOAM® is tough on my machines). Right now I am "trusting" the inner workings of OpenFOAM®, and I must warn that it gets kind of complicated when trying to simply recover the thermophysical data in OpenFOAM®.

Currently I am working on surface reaction boundary condition model and having access to the library is proving to be difficult for these efforts. I will keep this forum posted, as well as work on a wiki article to better understand the thermodynamic library.

What type of thermodynamic input are you using? I am using a Chemkin II file that I converted using chemkinToFoam.

have a great day!
Ryan Johnson
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#213
Re:Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
Hi,

have a look on www.cfd-online.com/Forums/openfoam/86530...compressiblegas.html where thermodynamic data (input file) are explained for Janaf thermoModel.

I am very interested in OpenFOAM® + Cantera, but unfortunately I haven't found nothing for 1.6-ext version o 1.7 (or 2.0) version.

Wiki article on thermodynamic library? Great idea!
Tell me if you need some help (of course if I am able to help you).

keeping in touch

Valerio
Valerio Novaresio
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#214
Re:Laminar Diffusion In OpenFOAM® 10 Months, 3 Weeks ago Karma: 0
Let's definitely get started on that wiki article...but first I need to figure out how I can attain the thermodynamic data while running the code. For instance, I thought it be as easy as: thermo.composition().W() to get atomic weights but honestly it is proving quite difficult to just find that! Any point to the correct class where I can find the information needed to get atomic wts of species (the ones from my therm.dat file not the ones tabulated) I'd greatly appreciate it! and I'll follow up with a full investigation:)
thanks ahead,
Ryan
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