[som]

Hi

While working on custom solver based on enterDymFoam and erfConvectiveMeltingPimpleFoam found some strange thing in pEqn.H file in the enterDymFoam directory :
------------
p == p_rgh + rho*gh;

if (p_rgh.needReference())
{
p += dimensionedScalar
(
"p",
p.dimensions(),
pRefValue - getRefCellValue(p, pRefCell)
);
p_rgh = p - rho*gh;
}
--------------------

Does p == p_rgh + rho*gh do anything or just return Bool ? Sorry for stupid question

[som]

ps:
openfoam v 2.1