Three Dimensional Analysis of the Flow in a Trench by Large Eddy Simulation

Abstract

Open channel flows in a trench exhibit complex turbulent flow patterns such as separation, reverse flow, or dead water zone. Although the flow in a trench has been studied both experimentally and numerically, its three-dimensional flow structure has not been clarified in detail so far. In this research, the flow is analyzed using the large eddy simulation(LES). The calculated result shows the evolution of vortices and the three-dimensional turbulent flow structure in the trench.