[ssitank]

Hi all,

I am currently writing my thesis using OpenFOAM as my tool.

To do that, I need to describe background theories that I am currently using for the simulation as all other thesis do.

However, it seems pretty hard to find out the right background theories, on which the implementations are based.

For example, I am currently using reactingParcelFoam with phase change model from the film to air(evaporation).

In the implementation, it uses "standardPhaseChange" model for the evaporation process.
(https://www.openfoam.com/documentati...8H_source.html)
However, it seems that it does not describe which theoretical model is used.

Is there a document that describes all the theoretical backgrounds?
Or am I the only one that cannot find it?

Please let me know if you have any ideas or any comments

Thanks so much for your help in advance!

[bestucan]

physic theory: any physic book or fluent theory guide

mathematics theory: iterative methods for sparse linear systems



combined: The OpenFOAM technology primer,
mathematics, numerics, derivations and OpenFOAM

that's what I know.

[geth03]

hi,

it is really hard to find ONE document that explains ALL the secret sauce with regards to the solvers, at least the more complex ones.

i can't comment on the solver that you are interested in.

i myself use the multiphase solvers, and for the theory behind the implementation i use theoretical books, phd/masters thesis etc.
i also changed codes or added stuff, for that i compared how the theory is
implemented in the code, so i checked and compared the mathematics with
code syntax.

i'm not an expert on algorithmic implementation (yet) but i know where to find
what i need and change code to fit my needs.

[ssitank]

Thank so much for your comments.

Well, usually, from the Openfoam configuration files, I can see some backgrounding models how it is implemented from it's name.


However, in reactingParcelFoam, the phase-change model is named as "standardPhaseChange", which gives me confusion.
(for phase change from liquid to gas, evporation)

I am not such an expert in thermomechanics or thermodynamics but it is hard to find what the "standardPhaseChange" model is.

Even in source code it is hard to find what that model is based on.

Is there any other way to find it out?

Thanks!

[Anup Singh]

I can't comment on your solver but you can try searching for PhD and Master thesis who have used the similar models from openfoam - they might mention the underlying principals or papers used. You can also look for Github page where they mention the changes made in the code as sometimes in those pages they also mention the reference papers they have used. You should can also look if Henry and Others have published any papers regarding this specific solver as there are few papers published by Henry and others which provide very powerful insight into the solvers implemented in openfoam.

[HPE]

If you can wait for the spring/summer of 2021, there will be an OpenFOAM primer written by Jasak, and one of his PhD graduates, Uroic, and released by Springer.

If you can't wait, you can consider to buy this book: The Finite Volume Method in Computational Fluid Dynamics: An Advanced Introduction with OpenFOAM® and Matlab.

I think the reason why there is no canonical resource for OpenFOAM is the fact that developing and maintaining a documentation is as expensive as the implementation itself, or even more.

Some of the links below could help as well.