養殖かき筏がある閉鎖性海域の流況計算

概要

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Numerical simulation of tidal current of an enclosed sea is carried out considering the effect of oyster rafts. Multilevel model is employed for the flow simulation. About 600 chains of oysters suspended from a raft are replaced by the resistance term distributed uniformly in the area where the oyster rafts locate. The basic equations are solved by finite difference method, where the convective terms are given by the third order upwind difference and other terms are given by the second order centered difference method. Eta-shima Bay is selected for the simulation. In order to compare with the simulated results, path lines of flouting buoy was measured by use of GPS. Through the comparison with simulated and measured results, it is concluded that the present method has a merit to simulate the tidal current in Eta-shima Bay. Comparison of simulated flow pattern with and without the oyster rafts shows the effect of rafts on the current especially the residual flow.
社団法人日本船舶海洋工学会の論文
2001-08-31