船尾形状を考慮した操縦流体力の近似的表現

概要

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The authors have been proposed the approximate formulae for hydrodynamic forces acting on ship in manoeuvring motion for estimating ship manoeuvrability at the design stage. However, this proposed formulae will be useful only for a stable ship on her course stability. For unstable ship such as. for example VLCC or ULCC, the manoeuvring performance being calculated using this proposed formulae have some error comparing with measured results. This will be caused as follows. The proposed formulae have been constructed by the parameter based on the main particulars such as ship's length, width, draft etc. On the other hands, ship's stern shape gives strong effect on manoeuvring performance even if its main particulars are the same. Therefore, approximate formulae for hydrodynamic forces should also include some effect of stern shape. In this paper, the approximate formulae for hydrodynamic forces acting on ship manoeuvring motion in newly proposed by using the data of 48 conditions in 15 kinds of model ship. The results of numerical simulation using this new proposed formulae agree well with the model test results in turning motion and zig-zag motion. This proposed formulae will be expected to be very useful for estimating ship manoeuvring motion at design stage.
社団法人日本船舶海洋工学会の論文
1999-09-04