The open source CFD toolbox
Mixed

# Properties

• Robin condition
• a linear blend of fixed value and gradient conditions
• blending specified using a value fraction
• not usually applied directly, but used in derived types, e.g. the inletOutlet condition
• explicit and implicit contributions

Face values are evaluated according to:

$\phi_f = w \phi_{ref} + \left(1-w\right)\left(\phi_c + \Delta \grad{\phi}_{ref} \right)$

where

 $$\phi_f$$ = face value $$\phi_c$$ = cell value $$\phi_{ref}$$ = reference value $$\Delta$$ = face-to-cell distance $$w$$ = value fraction

# Usage

<patchName>
{
type            mixed;
refValue        <field value>;
valueFraction   <field value>;
}


# Further information

Source code:

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