長方形断面を有する曲り流路内の流れ : 第2報,LDVによる層流の発達領域における流れ場の測定

抄録

An experimental investigation is carried out. The fully developed steady laminar flow in the entrance region of a curved rectangular channel is studied under the velocity profile of Poiseuille flow at the inlet and the Dean number is 220. The channel has an aspect ratio of 2 and a curvature ratio of 8. The axial velocity and the radial component of the secondary velocity are measured by using a laser doppler velocimeter (LDV), at 15 sections from the inlet (θ=0°) to the outlet (θ=270°) of the channel. The developing secondary flow is clearly presented and is in good agreement with the results obtained from a flow visualization carried out by the authors.