derivation of epsilon equation of kepsilon model
Does anybody have the deduction of the transport equation for the rate of dissipation of the kepsilon model? I already deduced the equation for k but the equation for epsilon I am having difficulties. Can anybody help myself? Thanks!

Re: derivation of epsilon equation of kepsilon mo
Ricardo, You can find the complete epsilon equation in this paper
Rodi, W. and Mansour, N.N., Low Reynolds number kâ€"eps modelling with the aid of direct simulation data. J. Fluid Mech. 250 (1993) 509â€"529. http://journals.cambridge.org/action...=1&aid=339411 good luck! Richard 
Re: derivation of epsilon equation of kepsilon mo
The epsilon equation that is used in the kepsilon model is itself modelled after the k equation, because the exact equation is not useful from a modelling point of view. Thus, similar to the k equation, on has
D/Dt(eps) = Prod_eps + diffus_eps  destruct_ eps Production is motivated by selfsimilar evolution of homogeneous shear turbulence. Destruction is motivated by selfsimilar decay of homogeneous turbulence, and diffusion is modelled in a gradient diffusion form just like diffusion of k. 
Re: derivation of epsilon equation of kepsilon mo
i'll get it (hand written material)scanned and send you.

Re: derivation of epsilon equation of kepsilon mo
Thaks for all for your help.

Re: derivation of epsilon equation of kepsilon mo
I'm having trouble with this derivation as well. Turbulence is giving me grief because stats really isn't my strong point. If it's not too much trouble, would it be possible for me to take a look at the derivation as well?

All times are GMT 4. The time now is 23:20. 