判断壁面类型

[李东岳]

#include "fixedValueFvPatchFields.H"
#include "zeroGradientFvPatchFields.H"
#include "wallPolyPatch.H"

if isA<wallPolyPatch>
(
    mom[0][0].boundaryField()[P]
)
else if 
(
    isA<fixedValueFvPatchScalarField>
    (   
        mom[0][0].boundaryField()[P]
    )
)