流動制御設備を有する貯水池での流動特性と淡水赤潮現象に関する数値解析

抄録

Simouke Reservoir located at Ooita prefecture is equipped with fence as flow control device for countermeasure of freshwater red tide. In this study, the influence of fence on the flow and freshwater red tide in Shimouke Reservoir are studied. First, the accuracy of numerical analysis model for flow and water quality is evaluated by comparison with observed data. The results obtained by this analysis model are good agreement with observed flow data and water quality data. Secondly, the influence of fence on the flow characteristics and red tide (chlorophyll-a distribution) are studied under various fence establishment conditions. From the analysis result, it is found that though plankton increases in the case of existing fence, the influence of fence is to disperse planktons.