I do the following operation b
I do the following operation but it gives wrong result (1.22005e-312):
const scalarField& ry = patch().deltaCoeffs();
// magnitude of patch-normal distance from face to cell centers:
const scalarField& yn= 1.0/ry;
but if I make a loop and use:
const scalarField& yn= 1.0/ry[facei];
it gives correct result. How can I do mathematical operations that contain scalarFields and scalars without looping? Thanks.
Classic mistake: reference to
Classic mistake: reference to a temporary: if you do:
scalarField yn= 1.0/ry;
all will be well. Operation 1/ry will return a COPY, i.e. a new field. You took a reference to it, which is a memory error - that's the little & bit after the scalarField.
I bet you already know this - if not, time for a careful look at a good C++ book.
Thanks Hrv for the explanation
Thanks Hrv for the explanation.
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