CFDによるタンカー船型の船尾形状最適化(第3報) : 自航シミュレータを用いた伝達馬力最小化

概要

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This paper presents optimization of tanker stern form based on viscous flow information obtained from Computational Fluid Dynamics. In this 3rd report, main focus is placed on minimization of delivered horse power in conjunction with application of self-propulsion simulator, which is based on extension of a Reynolds-averaged Navier-Stokes(RaNS)equation solver including propeller effects evaluated by the infinite-number propeller theory. The overall numerical method follows that of earlier work(1st and 2nd reports), i.e., coupling of RaNS equation solver and successive quadratic programming. Constraints considered in the present study are basically same as those used in earlier work, i.e., geometrical requirements of optimized hull for displacement, profile, maximum beam and depth, and stern frame lines to secure enough space for engine room. In the following, details of the numerical mothod are described, and the discussion of the results includes identification of salient differences of forms and integral parameters between the original and optimized hull forms. In conclusion, the present method appeared to successfully optimize the given tanker stern form, and the modification trends automatically demonstrated in the present work agree well with those commonly in use in traditional tanker hull form design.
社団法人日本船舶海洋工学会の論文
2000-09-25