I downloaded Chris's of_realFluid from github, but do not know how to compile this on my machine. My experience is limited to making simple modifications to solvers and just using wmake. I'm not sure what I should be doing to ensure the thermophysical property modifications are also included.

Hi,

you downloaded OpenFOAM 2.1 with my modifications. Simply compile the code (as you would compile the "normal" OpenFOAM version). The water properties (external media) must be compiled by hand (not included in script)

Christian

Hi Chris,
I added the following lines to createfields.H, compiled the solver correctly but when I try to run the realFluidPISOSolver, it is not able to write the Cp field.

I tried also to add this in realFluidPISOSolver.C with no success

Hi,

1. in here is a typo

rho = thermo.rho(); Cp = themro.Cp(); runTime.write();
is this correct im code?

2. Please try

volScalarField Cp2 ( IOobject ( "Cp2", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::AUTO_WRITE ), thermo.Cp() );

3. Add an Info line in the Cp() function of realgasThermo.C to see if the function is called.

Christian

Thanks for the response Chris. I'm still very new to this, so my apologies if these are very basic questions.

As a test I tried the Allmake shell script for my openfoam211 install (not the of_realFluid) to see how it works, but got a whole bunch of error messages.

I moved into /opt/openfoam211 and executed Allmake by
That was giving me a lot of errors. For example.
Tried running this with sudo/password in an attempt to fix the Permission denied message, but that didn't work either.

I'm in the right directory so I'm not quite sure what's going on.

The (limited) experience I have compiling with OpenFOAM requires a Make folder, and files + options with that Make folder. Compiling everything else as you are suggesting isn't like that (at least I don't think so) so I'm getting confused. I've also tried the Allmake shell script in src folder, but get similar error messages

Hi,

you are trying to compile OF under root without being a superuser.

Have a look through the forum you will definitely find some theads about how to compile OF


Christian

Hi Chris,

Yes, the code is ok.

In this way the solver is able to write the specific heat field, every time step the Cp2 variable is written, but I'm not sure to understand why the code does not accept Cp.

Thank you very much for your kind support!

Hi,

the problem is that in realGasHThermo, a field called Cp is constructed in the Cp() function. So you have to fields with the same name and the last field (which is the one in realGasHThermo) is used.

Christian

I may be missing something obvious, but when attempting to compile realFluidPISOSolver I get the following error message.
in createFields.H, line 45
I do not know how to compile thermophysical properties which I think needs to be done? Executing Allwmake in of_realFluid/src/thermophysicalModels gives some permission errors and I haven't been able to figure out why.

Thanks for your for your patience. I am learning (albeit slowly!)

Hi,

you have not compiled my thermo code, so the solver calls a function unknown to him.

Christian

I don't know how to do that. I've looked around online and in the user guide and still am not sure. There is a similar thread here (http://www.cfd-online.com/Forums/ope...erties-ii.html) and my understanding is that I need to modify Make/options to include the correct path. Something kind of like:

Is this even remotely close to what I should be doing? :confused:

Can you possibly provide a more detailed description of how to compile everything correctly?

Hi Chris,
I'm using realFluidPISOSolver to simulate transcritical injenction of Nitrogen according to the article below with very good result. In the attached image the experimental data for axial density are compared to the simulation results.
The solver seems to work correctly and it is very reliable!

Tae Seon Park, LES and RANS simulations of cryogenic liquid nitrogen jets, J. Of Superciritical Fluids 72 (2012) 232-247

Since you coded real gas formulation for mixtures also I'm wondering how difficult would be to link your library to reactingFoam solver.

Regards

HI,

depends on your goal. If you simply want to mix inert gases, that should be easy.

Christian

Hi Chris,
Sorry to continue bothering you with this, but I am still not able to compile your real gas solver on my computer. I really want to get this working and haven't been able to figure out my problems over the last few days.

Peter, perhaps you can help me out also?

Chris, you mentioned that I need to compile the thermo code. I haven't been able to do that. I have the of_realFluid from your git saved to my home folder: To try and compile the thermo code I moved into
and executed wmake command. I get the following error message:
So it can't find volFields.H.

Within the Make folder, I changed "files" at the very end to have LIB = $(FOAM_USER_LIBBIN)/libbasicThermophysicalModels and this is my "options" file:

I have tried looking around the forums for a few days now and don't know what to do. Any help is much appreciated.
Regards,
Aaron

Hi,

change the installation path in OpenFOAM/etc/bashrc and compile OpenFOAM (all of it) using Allwmake (the installed OF version must not be loaded)

or

compile the thermo library as a FOAM_USER_LIBBIN. Rename it dynamic library (e.g. /libbasicThermophysicalModels2). Make sure the install OpenFOAM version on your machine is compatible to the OF version I used. The environment variables of the installed OF version must be loaded. Then, change the path to the new thermo library in the solver and compile the solver

Christian

PS:

have a look at
http://openfoamwiki.net/index.php/In...OpenFOAM-2.1.1
or
http://openfoamwiki.net/index.php/In...M-2.2.0/Ubuntu

Hi Chris,
mixing inert gases should be a good starting point! My real goal is to have a real gas capable version of reactingFoam.

Hi,

the library can mix inert gases if you provide the correct mixture class (e.g. rewrite pureMixture.C).

For reactions: A guess you need to add a few more things. Have a look at the difference between specieThermo and realGasSpecieThermo (especially the functions I remove without an equivalent new function)

Another point is the enthalpy of formation, which must be included.

Finally, you must add the library to the reaction models (have a look how the current thermo models are connected to the reaction model)


Christian

Problem with IAPWS package
 

Hi Chris,

The real gas package is working, but when I tried to use the IAPWS package, the following error appears:

I tried to compile the IAPWS package, but there is a problem,

Do you have any idea about this?

Thanks in advanced,
Felipe Magazoni

Hi,

do you use my github code or have you included the new code in your OF version?



Christian

Hi,

the problem seems to be related to the macro in basicPsiThermo.

Have a look if the code is copied correctly.

Christian