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Variation of gravity with time

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Old   November 18, 2022, 01:14
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Thanks Jon for the response

But my first attempt was to try the code as it was posted in the forum. That itself didn't work. subsequently I tried out many options none of them worked.
g=gunits*Foam::sin(runTime.value()*pi*2.0 *freq)*vector(0,0,1);
g=gunits*vector(0,0,1);
g=vector(0,0,1);
All of them give a type mismatch.

My understanding from the error message is that g is of the type gravity whereas the expression on the RH is of the type dimensioned vector. So it isn't able to assign.

In fact the full error message is as below
interFoam2.C:113:3: error: no match for ‚operator=‚ (operand types are ‚const Fo am::meshObjects::gravity‚ and ‚Foam::dimensioned<Foam::Vector<double> >‚)
g=gunits*Foam::sin(runTime.value()*pi*2.0*freq)*ve ctor(0,0,1);
^
interFoam2.C:113:3: note: candidate is:
In file included from /scratch/OpenFOAM/OpenFOAM-v1812/src/finiteVolume/lnInclud e/fvCFD.H:24:0,
from interFoam2.C:38:
/scratch/OpenFOAM/OpenFOAM-v1812/src/finiteVolume/lnInclude/gravityMeshObject.H: 53:7: note: Foam::meshObjects::gravity& Foam::meshObjects::gravity:perator=(co nst Foam::meshObjects::gravity&) <deleted>
class gravity
^
/scratch/OpenFOAM/OpenFOAM-v1812/src/finiteVolume/lnInclude/gravityMeshObject.H: 53:7: note: no known conversion for argument 1 from ‚Foam::dimensioned<Foam::V ector<double> >‚ to ‚const Foam::meshObjects::gravity&‚



On a different note do you have any idea on what Foam::sin() returns? I expected that it would return a double. So I had put it inside the vector definition.
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