基于 RANS 方程和 VOF 模型求解船体粘性兴波流场，采用 Overset 技术处理船体运动，开展了小水线面双体船（Small Waterplane Area Twin Hulls, SWATH）迎浪规则波中运动响应特性及其产生机理的研究。通过数值计算结果与模型试验结果的对比分析，验证了本文方法的有效性；在此基础上，分析了船体运动响应曲线中各峰值产生的原因及片体间相互干扰对 SWATH 船在波浪中运动响应的影响，发现其中一个峰值出现的原因为遭遇频率接近船体运动固有频率，由此发生共振；另一个峰值的出现则可能与 SWATH 特殊的船型及附体配置有关。由于SWATH 船片体间的水动力干扰效应，SWATH 船在波浪中运动响应峰值较单个片体响应峰值明显减小，且出现的位置向低频方向移动。
Based on RANS equations and VOF method to solve viscous wave flow field and Overset technique to deal with ship motions, this study investigates the characteristics of longitudinal motions for Small Waterplane Area Twin Hulls (SWATH) in regular head waves. The computation method is validated by comprehensive comparison between numerical results and experimental data. Further, the mechanism of peaks in the responses transfer function curves as well as the influence of twin-hull interaction on the motion responses of SWATH are analysed. The results show that the one peak in the responses transfer function curves is caused by the natural resonance of ship, at that moment, the encounter frequency is close to the natural frequency of ship motions. And another peak is probably related to the particular hull form and the appendage configuration of SWATH ship. Influenced by the twin-hull interaction, peaks of motion responses for SWATH have smaller magnitudes and lower frequencies in contrast with that for the single hull.
2016,38(8): 5-10 收稿日期：2015-9-23
DOI：10.3404/j.issn.1672-7619.2016.08.002
分类号：U661.32
基金项目：国家自然科学基金资助项目(50879090，51509256)
作者简介：邓磊(1990-),男,硕士研究生,研究方向为舰船水动力性能。
参考文献：
[1] 黄鼎良. 小水线面双体船性能原理[M]. 北京: 国防工业出版社, 1993.
[2] 董祖舜, 董文才. 小水线面双体船(SWATH)耐波性特点及影响因素分析[J]. 海军工程学院学报, 1995(1): 7-15. DONG Zu-shun, DONG Wen-cai. Analysis of some influence factors on seakeeping of small waterplane area twin hull ships (SWATH)[J]. Journal of Naval University of Engineering, 1995(1): 7-15.
[3] SCHELLINE T E, PAPANIKOLOU A. Prediction of seakeeping performance of SWATH ships and comparison with measurements[C]//FAST’ 91, 1st International Conference on Fast sea Transportation. Trondheim, Norway: Tapir Publishers, 811-826.
[4] 夏向东. 高速小水线面双体船水动力性能研究[D]. 武汉: 海军工程大学, 2011.
[5] BOUSCASSE B, BROGLIA R, STERN F. Experimental investigation of a fast catamaran in head waves[J]. Ocean Engineering, 2013, 72: 318-330.
[6] 毛筱菲. 小水线面双体船在波浪中的运动响应预报[J]. 船海工程, 2005(4): 3-15. MAO Xiao-fei. Numerical study of the motion response prediction of SWATH ship in waves[J]. Ship & Ocean Engineering, 2005(4): 13-15.
[7] 吴介, 谷家扬, 管义锋, 等. 基于 Rankine 源法的小水线面双体科考船耐波性预报[J]. 江苏科技大学学报(自然科学版), 2015, 29(2): 103-107. WU Jie, GU Jia-yang, GUAN Yi-feng, et al. Prediction of SWATH research ship seakeeping performance based on the Rankine source method[J]. Journal of Jiangsu University of Science and Technology (Natural Science Edition), 2015, 29(2): 103-107.
[8] QIAN P, YI H, LI Y H. Numerical and experimental studies on hydrodynamic performance of a small-waterplane-area-twin-hull (SWATH) Vehicle with inclined struts[J]. Ocean Engineering, 2015, 96: 181-191.
[9] SHEN Z R, YE H X, WAN D C. URANS simulations of ship motion responses in long-crest irregular waves[J]. Journal of Hydrodynamics, 2014, 26(3): 436-446.
[10] LEE C M, CURPHEY R M. Prediction of motion, stability, and wave load of small-waterplane-area, twin-hull ships[C]//SNAME Transactions, 1977, 85: 94-130.
[11] LEE C M. Theoretical prediction of motion of small-wat-erplane-area, twin-hulls (SWATH) ship in waves[R]. David Taylor NSRDC Report, 76-0046, Bathesda (Maryland): DTNSRDC, 1976.
[12] RUSCHE H. Computational fluid dynamics of dispersed two-phase flows at high phase fractions[D]. UK: Imperial College, 2002.
[13] CHOI J, YOON S B. Numerical simulations using momentum source wave-maker applied to RANS equation model[J]. Coastal Engineering, 2009, 56(10): 1043-1060.
[14] CARRICA P M, WILSON R V, NOACK R W, et al. Ship motions using single-phase level set with dynamic overset grids[J]. Computers & Fluids, 2007, 36(9): 1415-1433.
