Standard k-epsilon model
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C_{1 \epsilon} = 1.44, \;\;\; C_{2 \epsilon} = 1.92,\;\;\; C_{3 \epsilon} = -0.33, \;\; \; C_{\mu} = 0.09, \;\;\; \sigma_k = 1.0, \;\;\; \sigma_{\epsilon} = 1.3 | C_{1 \epsilon} = 1.44, \;\;\; C_{2 \epsilon} = 1.92,\;\;\; C_{3 \epsilon} = -0.33, \;\; \; C_{\mu} = 0.09, \;\;\; \sigma_k = 1.0, \;\;\; \sigma_{\epsilon} = 1.3 | ||
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+ | == References == | ||
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+ | See section [[K-epsilon_models#References|References]] in the parent page [[K-epsilon models]]. | ||
[[Category:Turbulence models]] | [[Category:Turbulence models]] |
Revision as of 19:57, 16 December 2014
Contents |
Transport equations for standard k-epsilon model
For turbulent kinetic energy
For dissipation
Modeling turbulent viscosity
Turbulent viscosity is modelled as:
Production of k
Where is the modulus of the mean rate-of-strain tensor, defined as :
Effect of buoyancy
where Prt is the turbulent Prandtl number for energy and gi is the component of the gravitational vector in the ith direction. For the standard and realizable - models, the default value of Prt is 0.85.
The coefficient of thermal expansion, , is defined as
Model constants
References
See section References in the parent page K-epsilon models.