波状路床上の流れにおける乱れ特性について(2)

Abstract

A goal of this study is to disclose the structure of the flow over a wavy bed. Two kinds ofartificial wavy beds are used. One is a triangular wavy bed, which has a similar geometry to dune-type sand waves, and the other a redge-type, in which various ratios of distance to height are used.The distributions of mean velocity afsd turbulent velocity are measured using a hot-film flowmeter, and the behavior of the flow in the rear wake region are measured visually. On the basis of thesemeasurements, the structure of the flow over wavy beds is explained fairly well.