[braennstroem]

Hi,
a pretty simple one... I hope...

I would like to create a new postprocessing variable using:

volScalarField test
(
IOobject
(
"test",
runTime.timeName(),
mesh,
IOobject::NO_READ
),

(fvc::grad(U))/mag(fvc::laplacian(U.component(i)))
);
test.write();

This works fine as long as U.component(i) has some kind of value, but if the denominator is zero I get obviously an error. Can anyone give me an advice, how an 'if' question could look like? I tried somehting like: if (U.component(i)==0.0){...}

but I get:

test.C: In function 'int main(int, char**)':
test.C:128: error: expected primary-expression before 'if'

Fabian