3次元数値シミュレーションに基づく大水深海域での湧昇流生成構造物の開発

抄録

In this study, the magnitude of upwelling and resultant convective and mixing zone about the upwelling structure have been examined by the 3-D numerical simulation method. The computation area about the upwelling structure was 2400m long, 960m wide and 200m deep. The finite differential method was applied for the discretion. The marker layer of 14m thick was placed on the bottom in order to visualize the upwelling. We have adopted three different shapes of upwelling structure, such as I-shaped, V-shaped and X-shaped plates in the horizontal plane.
Based on the results on a series of numerical experiments, it has been revealed that the most effective structure is the V-shaped plate for generating the upwelling and resulting mixing in the 3-D flow field. It is also seen that the vortices are generated from both wing edges of the V-shaped structure. The analysis on the V-shaped structure with various heights and open width and angles was carried out for the most effective structure.