抄録
This paper presents the experimental results on the negative surface buoyant jet discharged on the sloping bottom. Different results has been reported by many researchers on the hydraulic conditions of plunging point. The purpose of this study is to clarify the cause of this difference by flow visualization technique. Fow visualization revealed to be able to classify into four flow types from the configurations of density interface of plunging point and strong dependence of bottom slopes and densimetric Froude number at outlet on hydraulic conditions of plunging point was found. Flow mechanism of each types were investigated experimentally. Finally, this paper concluded that the different results on hydraulic conditions which has been reported by several researchers were caused by different experimental conditions.
