[somesh]

Hello,

I am trying to convert an old custom library from OpenFOAM-2.3.x to OpenFOAM-4.x

The library uses molecular weights of different species in calculations. Earlier in OF-2.3.x the library had routines such as:

void Foam::custom::computeCustom
(
...
    basicMultiComponentMixture& mixture
...
)
{
...
    mixture.W(spIndex); // spIndex is an already-defined label
...
}

In OF-4.x, it seems W() is not part of basicMultiComponentMixture and can only be accessed from basicSpecieMixture.

Does anyone have any suggestion on how to access molecular weight of species from basicMultiComponentMixture?

[zhangyan]

Can it be replaced by

this->getLocalThermo(speciei).W()

?

[somesh]

Thanks zhangyan for the quick reply.

I did not try your method, but I think I have figured it out (my C/C++ skills are rusty at best!)

I used

void Foam::custom::computeCustom
(
...
    basicMultiComponentMixture& mixture
...
)
{
...
const basicSpecieMixture& spMixture =
          dynamic_cast<const basicSpecieMixture&>(mixture);

    spMixture.W(spIndex); // spIndex is an already-defined label
...
}

and now I have access to member functions inside basicSpecieMixture as: