Properties🔗

• Neumann condition
• fixed normal-gradient
• implicit

Face values are evaluated according to: \(\phi_f = \phi_c + \Delta \grad{\phi}_{\ref}\)

where

\(\phi_f\)

face value

\(\phi_c\)

cell value

\(\grad(\phi)_{\ref}\)

reference gradient

\(\Delta\)

face-to-cell distance

Usage🔗

<patchName>
{
    type        fixedGradient;
    gradient    <field value>;
}

Further information🔗

Source code:

• Foam::fixedGradientFvPatchField