LARGE-EDDY SIMULATION OF TURBULENT-FLOW IN A CURVED PIPE

In this paper, we use Large-Eddy Simulation (LES) to compute a fully-d eveloped turbulent flow in a curved pipe. The results allow use to stu dy how the curvature influences the mean velocity profile and also var ious turbulent statistics. We find reasonable agreement with the few e xperiments that are available. Our simulation also allows a detailed s tudy of secondary motion in the cross section of the pipe which are ca used by the centrifugal acceleration due to the pipe curvature. It is known that this secondary motion may consist of one, two, or three cir culation cells. In our simulation results we find one circulation cell .