抄録
Turbulent flow in two-dimensional channel with rectangular turbulence promoters has been predicted numerically by Large Eddy Simulation (LES). 9, 000 grid points were distributed on three-dimensional co-ordinates. Timelines, streaklines, Strouhal number of vortex shedding and so on were calculated, and also compared with those of the flow visualization experiments by use of dye-injection and hydrogen-bubble methods. It is shown that the large-scale structure of the flow around the steps can be described well by LES.
