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Incompatible fields for operation

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Old   October 15, 2008, 06:44
Default Hi Khaled From the mess
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su junwei
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Hi Khaled

From the message above, we can infer that the type of alpha and U are incompatible. for instance, volScalarField + volVectorField

I also noticed that the code segment below
+ fvm::Sp(ix, alpha)
it is a impilit operation, if alpha and U are not the same object, adding them will also cause the problems.

Hope this helps

Junwei
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Old   October 15, 2008, 08:34
Default Hi Junwei, thanks for the a
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Hi Junwei,

thanks for the answer.
For alpha i add

volVectorField alpha
(
IOobject
(
"alpha",
runTime.timeName(),
mesh,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh
);

I thought for ix it is enough to be a volScalar or a Scalar.

Khaled
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