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 |
<patchName> { type fixedGradient; gradient <field value>; }
Source code:
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