EXPERIMENTAL STUDY ON SIMILARITY OF BED-FORM IN A TABLE-TOP HYDRULIC MODEL

Abstract

A table-top hydraulic model is thought to be used at the place of project explanation or agreement formation. This study examines the phenomena, which the table-top hydraulic model can express qualitatively, and reproducibility of those phenomena. In examination, basic experiments are performed both in a curved flume and a straight flume, and experimental studies are done about the table-top hydraulic modelfor real channels of the Tonegawa down-stream region and the Kamanashigawa. The channel width of the model concerned is about 10-20cm. Results of experiments shows that for a field where flow is affected by the plane shape, such as curved channels, reproducibility is relatively observed even in the table-top hydraulic model, whereas for a field where flow is influenced by bed-form, reproducibility is low because of the influence of the model scale.