Turbulent mixing length dissipation rate

Table of Contents

• Properties
• Usage
• Further information

Properties

• based on the inlet-outlet condition

• sets the turbulent dissipation rate based on the patch turbulence kinetic energy and user-supplied mixing length

  \[ \epsilon_p = \frac{C_{\mu}^{0.75} k^{1.5}}{L} \]

• in the event of reverse flow, a zero gradient condition is applied, i.e.

  \[ \frac{d \epsilon}{d x} = 0 \]

Usage

The condition is specified in the field file using:

<patchName>
{
    type            turbulentMixingLengthDissipationRateInlet;
    mixingLength    1;
    value           <field value>;

    // Optional entries
    k           k;
    phi         phi;
}

Further information

Source code:

• Foam::turbulentMixingLengthDissipationRateInletFvPatchScalarField

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