表面取水施設における渦対策工の空気取り込み渦に及ぼす影響に関する実験的研究

抄録

Air entrainments by vortices at water surfaces inside surface intake facilities of electrical power plants cause some problems, such as deterioration of power generation, destruction of blade in a turbine, etc. To suppress air entrainments by the vortices, some vortex-preventing devices have been proposed and have been used in many electrical power plants. The vortex-preventing devices used in the intake facilities are working effectively in many cases. However, the hydraulic properties of flow structure by the vortex-preventing devices are still unclear.
In this paper, the effects of the vortex-preventing devices in surface intake facilities have been investigated experimentally by using the particle tracking velocimetry. The results show that the vortex-preventing devices suppress the turbulent intensity and the vorticity inside the facility.