小水线面双体船（small water-plane-area twin hull，SWATH）是指为改善耐波性、减小兴波阻力，而使片体的型线在水线附近光滑收缩的双体船。本文依据三维势流理论计算某小水线面双体船的运动响应，考虑加装固定式首尾鳍后鳍的升力对水动力系数的影响。应用Fluent软件计算鳍的动升力修正系数，根据经验公式导出鳍所产生的水动力系数，将其带入到船体纵向运动微分方程。本文计算时采用修改程序后的WALCS软件进行运动响应的计算，将得到的结果与无鳍船体的计算结果相比较，分析减摇效果。研究结果可为鳍的设计提供参考。
SWATH is designed to improve the seakeeping performance, reduce wavemaking resistance. This paper based on the three-dimensional potential flow theory calculates the SWATH ship motion response, considering the effection of fixed fins on hydrodynamic coefficients. Using the Fluent software to calculate the dynamic lift coefficient of fins, and the hydrodynamic coefficients of fin can be derived based on empirical formula. In this paper, the calculation of the motion response is based on WALCS software, and the results obtained are compared with the calculation results of the non fins hull. The research results can provide reference for fins design.
2016,(s1): 32-36,50 收稿日期：2016-07-30
DOI：10.3404/j.issn.1672-7619.2016.S1.005
分类号：U674.951
作者简介：刘旻冲(1990-),男,硕士研究生,研究方向为:船舶与海洋结构物强度与波浪载荷。
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