# K-epsilon models

(Difference between revisions)
 Revision as of 06:49, 4 October 2006 (view source)← Older edit Revision as of 07:09, 4 October 2006 (view source)Newer edit → Line 1: Line 1: + == Introduction == + + 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]], $k$.  The second transported variable in this case is the turbulent [[dissipation]], $\epsilon$. It is the variable that determines the scale of the turbulence, whereas the first variable, $k$, determines the energy in the turbulence. + + == 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]] + + == Miscellaneous == + # [[Near-wall treatment for k-epsilon models]] + + + [[Category: Turbulence models]]

## 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, $k$. The second transported variable in this case is the turbulent dissipation, $\epsilon$. It is the variable that determines the scale of the turbulence, whereas the first variable, $k$, determines the energy in the turbulence.

## Miscellaneous

1. Near-wall treatment for k-epsilon models