FE dicretisation for k-e model
 

I've been doing research for my master thesis at Gadjah Mada University,Indonesia. My research is about k-e turbulence model using FE method (Petrov Galerkin Scheme). I have dificulty in dicretisation of e-equation especially in "Generation-Destruction" term.

My question :

Does anyone know , how to make discretisation of "Generation-Destruction" term in e-equation ?

Thanks for your help,

Sigit Sutikno