The vector \(\vec{d}\) joining two cell centres is parallel to the normal direction of the inter-connecting face.
\[\snGrad Q = \frac{Q_P - Q_N}{| \vec{d} |}\]Properties🔗
- Calculated using a central difference scheme using the mesh delta coefficients
- Any non-orthogonality is ignored
Usage🔗
The scheme is specified using:
snGradSchemes
{
default none;
snGrad(Q) orthogonal;
}
Further information🔗
Source code