k – l AND k - ε MODELLING IN OSCILLATORY FLOW OVER ROUGH BEDS

摘要

A new assessment is made of two-equation ( k -ε ) and one-equation ( k - l ) turbulence models in oscillatory flow. The turbulence models are compared with the data of Jensen, Sumer and Fredsoe[1] . An attempt is made to quantify the uncertainties in the Reynolds shear stress measurements. The results show that the k -ε model performs well, and considerably better than the k - l model.