K-epsilon models
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| + | == Introduction == | ||
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| + | The K-epsilon model is one of the most common [[Turbulence modeling|turbulence models]]. It is a [[Two equation models|two equation model]], that means, it includes two extra transport equations to represent the turbulent properties of the flow. This allows a two equation model to account for history effects like convection and diffusion of turbulent energy. | ||
| + | The first transported variable is [[turbulent kinetic energy]], <math>k</math>. The second transported variable in this case is the turbulent [[dissipation]], <math>\epsilon</math>. It is the variable that determines the scale of the turbulence, whereas the first variable, <math>k</math>, determines the energy in the turbulence. | ||
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| + | == Usual K-epsilon models == | ||
# [[Standard k-epsilon model]] | # [[Standard k-epsilon model]] | ||
# [[Realisable k-epsilon model]] | # [[Realisable k-epsilon model]] | ||
# [[RNG k-epsilon model]] | # [[RNG k-epsilon model]] | ||
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| + | == Miscellaneous == | ||
| + | # [[Near-wall treatment for k-epsilon models]] | ||
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| + | [[Category: Turbulence models]] | ||
Revision as of 07:09, 4 October 2006
Introduction
The K-epsilon model is one of the most common turbulence models. It is a two equation model, that means, it includes two extra transport equations to represent the turbulent properties of the flow. This allows a two equation model to account for history effects like convection and diffusion of turbulent energy.
The first transported variable is turbulent kinetic energy, 
. The second transported variable in this case is the turbulent dissipation, 
. It is the variable that determines the scale of the turbulence, whereas the first variable, , determines the energy in the turbulence.
