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multiphaseInterFoam access to alpha.water

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Old   June 5, 2014, 05:45
Default multiphaseInterFoam access to alpha.water
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Martin K
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Hi all,

to modify the multiphaseInterFoam solver I'm trying to use alpha.water in the UEqn.
How can I adress it?

My approach:
Code:
 volScalarField& alphaWater = objectRegistry::lookupObject<volScalarField>("alpha.water");
Any advices, explanations or links to understand how to read values out of fields will be appreciated!

Edit:
Compilation error:
Quote:
cannot call member function ‘const Type& Foam:bjectRegistry::lookupObject(const Foam::word&) const [with Type = Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>]’ without object
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Old   October 19, 2017, 22:26
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Hi Martin,

Could you find answer to your question? I am trying to address alpha of my first phase.

Thanks
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Old   November 3, 2017, 07:45
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Gary
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I am struggling with the same problem. Any help would be welcome!
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Old   November 3, 2017, 11:00
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Hi Gary,

You have to include your changes e.g. new parameter in multiphaseMixture.
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Old   November 8, 2017, 11:30
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Gary
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Thanks for your comment, bbita. I tried it, but I did not get it to work. I am not an experienced programmer. Could you show me how you solved it?
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Old   November 8, 2017, 11:37
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Hi gary,

It completely depends on the changes you want to apply in your code. I suggest you to understand different sections in the file. For instance, if you want to add a new parameter, you can do that similar to the way that rho is defined.
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Old   November 9, 2017, 17:30
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Hay!

If i remember correctly, in interMultiphaseFoam, all the phase fields are stored in phases_ of multiphaseMixture.

So accessing one of them would probably look like:

volScalarField& alphaWater= mixture.phases()["water"];

mixture - name of multiphaseMixture class
phases() - returns PtrDictionary<phase> phases_
["sth"] - looks if there is a phase that has a name "sth" in phases_, and returns it


hope it helps
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