code_saturne User's Forum

Hi Wayne,

As Yvan said, all the formulas have an independent table of symbols. I tried to share a table of symbols among multiple formulas with function mei_tree-new-with-shared_symbols in mei_evaluate.c but finally I found this solution a bit confusing for the user.

However, having the variable rho for the formula mu is a good idea. I've implemented this in the attached sources. These sources are not widely tested. If it is convenient, perhaps it will be integrated in the next version.

Hi, thanks a lot for your reply :)

Fantastic! I report I tested Alexandre's patch and it works as expected.

I think this is very useful. When I used FORTRAN user routines, I read rho value to calculate mu value. (I think this implies Code_Saturne calculate rho before calculating mu. Then what is the order for Code_Saturne to calculate the four parameters, density, visvosity mu, specific heat and thermal conductivity) Now we can also reuse the rho value in mu expression when using MEI. Thanks to the patch.

Many thanks for your time on it.

Best regards, Wayne

8-)  
 
I forgot to say that the sources are of course compatible with Code_Saturne 2.0-rc1  ;-)

Hello Wayne,

Reading through different threads, I noticed that nobody had answered your question concerning the calculation order for the different physical properties... sorry!

So, here are a few elements:

In FORTRAN, you control everyting, the order of calculation is up to you With MEI, it depends on how we coded it... currently, the order is: rho, mu, Cp and then scalars viscosity, scalars diffusivity. But, this is subject to change! So be careful with a supposed order ;)

Hope this helps!