リターンフロー型水中減勢工内の流況の数値解析とキャビテーション発生の検討

抄録

The investigation method for generation of cavitation in return-flow type submerged energy dissipater has not been established enough, from the problem in the measurement in the hydraulic model test, especially, when the gate is not opened completely and the released water from the gate has the downward angle. Then, in this research, numerical analysis for flow in return-flow type submerged energy dissipater is carried out, in a case study of the A Dam. As a result, it is clarified that there is a possibility of generation of cavitation on the end-wall when the gate is opening almost completely, or on the bed of the energy dissipater when opening ratio at the gate are about 10%.