A122 地震断水対応貯水槽内の水循環解析

抄録

A water storage tank is proposed to be used at the heavy damage of water supply line of a city. Though, it is a part of pipeline and is expecting that the fresh water flows normally and works as the storage tank for the drinking water at the emergency due to the earthquake. As water is used for drinking, it is not expecting to have a dead water stagnation zone in the tank. In this study we made a one fifth scale transparent model of the water storage tank. It was used for the experiments by the dye injection method, PIV and compared with numerical simulations. The experiments were made using three types of inlet nozzles with different lengths and angles. The injected dye flow was recorded by video camera and PIV measurement was also made in several cases. And numerical simulation of flows was made for the model tank with the same condition of experiments. From the results of experiments we have demonstrated that controlling inlet nozzle makes no part of stagnation area.