# K-epsilon models

(Difference between revisions)
 Revision as of 07:40, 4 October 2006 (view source)← Older edit Revision as of 09:25, 12 June 2007 (view source)Jola (Talk | contribs) Newer edit → Line 1: Line 1: + {{Turbulence modeling}} == Introduction == == 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 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. + 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 == == Usual K-epsilon models == Line 13: Line 14: [[Category:Turbulence models]] [[Category:Turbulence models]] + + {{stub}}

## 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