2306/paEqn_8H_source.html

 fvScalarMatrix paEqn
 (
     fvm::d2dt2(pa) - sqr(c0)*fvc::laplacian(pa)
 );

 if (solvePrimaryRegion)
 {
     paEqn.relax();
     paEqn.solve();
 }
 else
 {
     pa.correctBoundaryConditions();
 }
Foam::fvScalarMatrix
fvMatrix< scalar > fvScalarMatrix
Definition: fvMatricesFwd.H:37

Foam::sqr
dimensionedSymmTensor sqr(const dimensionedVector &dv)
Definition: dimensionedSymmTensor.C:44

Foam::fac::d2dt2
tmp< GeometricField< Type, faPatchField, areaMesh > > d2dt2(const dimensioned< Type > dt, const faMesh &mesh)
Definition: facD2dt2.C:39

Foam::fac::laplacian
tmp< GeometricField< Type, faPatchField, areaMesh > > laplacian(const GeometricField< Type, faPatchField, areaMesh > &vf, const word &name)
Definition: facLaplacian.C:40

solvePrimaryRegion
bool solvePrimaryRegion(pimpleDict.getOrDefault("solvePrimaryRegion", true))

paEqn
fvScalarMatrix paEqn(fvm::d2dt2(pa) - sqr(c0) *fvc::laplacian(pa))