多層モデルによる超大型浮体まわりの流況計算精度について : 模型実験との比較

概要

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The multi-level model for the calculation of tidal flow and diffusion of a bay has been developed and used for the simulation of ocean environmental problems. Recently, it is extended to the problem of bay with a very large floating structure or a mega-float. However, the validation of the application is reqired before generalization of the metod, because the multi-level model is based on a quasi-three dimensional method with hydrostatic pressure approximation. In this paper, model experiments were conducted to measure the flow field around a towed pontoon in shallow water. Measured distributions of the velocity and mass-flux below a pontoon are compared with calculations by a multi-level model in three floating conditions. From those results, it is confirmed that the multi-level model is applicable for the simulation of the flow around a mega-float of small draft in shallow water, except the flow field with separation appeared in the wake of a pontoon of large draft.
社団法人日本船舶海洋工学会の論文
1996-09-04