ANSYS FLUENT 12.0 Theory Guide - 4.3.5 Modeling the Turbulent Destruction

4.3.5 Modeling the Turbulent Destruction

The destruction term is modeled as

$Y_\nu = C_{w1} \rho f_w \left(\frac{\widetilde{\nu}}{d}\right)^2$

(4.3-12)

where

$f_w = g \left[\frac{1 + C_{w3}^6}{g^6 + C_{w3}^6}\right]^{1/6}$

(4.3-13)

$g = r + C_{w2} \left(r^6 - r\right)$

(4.3-14)

$r \equiv \frac{\widetilde{\nu}}{\widetilde{S} \kappa^2 d^2}$

(4.3-15)

$C_{w1}$ , $C_{w2}$ , and $C_{w3}$ are constants, and $\widetilde{S}$ is given by Equation 4.3-6. Note that the modification described above to include the effects of mean strain on will also affect the value of $\widetilde{S}$ used to compute .

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