A roughness-dependent model

(Difference between revisions)
 Revision as of 14:27, 19 June 2007 (view source)R.absi (Talk | contribs) (→Kinematic Eddy Viscosity)← Older edit Revision as of 14:31, 19 June 2007 (view source)R.absi (Talk | contribs) (→Kinematic Eddy Viscosity)Newer edit → Line 1: Line 1: ==Kinematic Eddy Viscosity== ==Kinematic Eddy Viscosity== - Two-equation model : + Two-equation model: - :$+ [itex] \nu _t = C_{\mu} {{k^2 } \over \varepsilon } \nu _t = C_{\mu} {{k^2 } \over \varepsilon }$ [/itex] - where : :$C_{\mu} = 0.09$ + where: $C_{\mu} = 0.09$ - One-equation model : + One-equation model: :$:[itex] - \nu _t = k^{{1 \over 2}} l + \nu _t = l k^{{1 \over 2}} = {C_{\mu}}^{1/4} l_m k^{{1 \over 2}}$ [/itex] + + Algebraic model: + k^{{1 \over 2}} = {1 \over {C_{\mu}}^{1/4}}

Kinematic Eddy Viscosity

Two-equation model: $\nu _t = C_{\mu} {{k^2 } \over \varepsilon }$ where: $C_{\mu} = 0.09$

One-equation model:

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

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