A low Reynolds number k-epsilon modelling of turbulent pipe flow: Flow pattern and energy balance

The present paper addresses a comparative analysis of twelve different vers ions of low Reynolds number k-epsilon turbulence models. The predictive cap ability of the models have been tested on the basis of the flow patterns an d energy balance. Numerical simulations were performed at the Reynolds numb ers of 7400, 22 000 and 500 000. The predicted mean axial velocity and turb ulent kinetic energy were compared with the experimental data of Durst et a l. (1995) and Schildknecht et al. (1979) for the Reynolds number of 7400 an d 22 000 respectively. The overall energy balance was established at three Reynolds numbers of 7400, 22 000 and 500 000. A comparison of all the model s has been predicted.