# A roughness-dependent model

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(→Kinematic Eddy Viscosity) |
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==Kinematic Eddy Viscosity== | ==Kinematic Eddy Viscosity== | ||

- | Two-equation model : | + | Two-equation model: |

- | + | <math> | |

\nu _t = C_{\mu} {{k^2 } \over \varepsilon } | \nu _t = C_{\mu} {{k^2 } \over \varepsilon } | ||

</math> | </math> | ||

- | where | + | where: <math> C_{\mu} = 0.09 </math> |

- | One-equation model : | + | One-equation model: |

:<math> | :<math> | ||

- | \nu _t = k^{{1 \over 2}} | + | \nu _t = l k^{{1 \over 2}} = {C_{\mu}}^{1/4} l_m k^{{1 \over 2}} |

</math> | </math> | ||

+ | |||

+ | Algebraic model: | ||

+ | k^{{1 \over 2}} = {1 \over {C_{\mu}}^{1/4}} |

## Revision as of 14:31, 19 June 2007

## Kinematic Eddy Viscosity

Two-equation model: where:

One-equation model:

Algebraic model: k^Template:1 \over 2 = {1 \over {C_{\mu}}^{1/4}}