2004 Volume 20 Pages 395-400
In Hokkaido, more than 30 semi-closed water areas exist, and aquaculture has been performed in many of those water areas. Since the semi-closed water area connected to open sea by narrow mouth, the area is suitable for the aquaculture of scallops, oysters, and other marine products. However the water quality in semi-closed water area has the danger of getting worse quickly with change of surrounding environment. For the permanent use for the aquaculture, the maintenance of the water quality is needed. As one of the water quality preservation measures, promotion of the water exchange is mentioned. Although the aquaculture facility densely installed in the water area is one factor that worsenswater exchange, the flow analysis and evaluation of the amount of water exchange in considering influence of the aquaculture facility has not been performed. In this paper, the influence of aquaculture facility to water exchange clarified by the flow analysis which set up the fluid resistance of thefacility obtained by experiment is described.
