[zcheng]

Hello everyone I am new to OpenFoam and I would like to know if it's possible to implement an if else condition in Power Law viscosity model?

if (a<0.8)
{
nuMin nuMax loop of PowerLaw;
}
else
{
nu = 10*a;
}

Thanks a lot.

[tooran]

Hi,
I want to change the HerschelBulkley viscosity model . I want to add a if-condition as follows:
if strain rate is greater than gama (gama is a variable which read from the input) then calculate viscosity according to ....
so I write the following code :


//*************************************

if (sr() < List<dimensionedScalar>(sr().size(), gama_))
{
return...








When I write "wmake libso" it shows me the following error :


error: no match for ‘operator<’ (operand types are ‘const Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>’ and ‘Foam::List<Foam::dimensioned<double> >’)
if (sr() < List<dimensionedScalar>(sr().size(), gama_))





Could you please help me?

[ybapat]

Operator < needs to be overloaded for classes of objects you are using on both side of the operator.