高海况下客滚船风浪阻力和功率航速预报  

Wind-Wave Resistance and Power-Speed Performance Prediction for a Ropax in High State of Sea

作　　者：李传庆[1,2] 朱仁传 LI Chuanqing;ZHU Renchuan(State Key Laboratory of Maritime Technology and Safety,Shanghai Ship and Shipping Research Institute Co.,Ltd.,Shanghai 200135,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海船舶运输科学研究所有限公司水路交通控制全国重点实验室,上海200135 [2]上海交通大学海洋工程全国重点实验室,上海200240

出　　处：《上海船舶运输科学研究所学报》2024年第3期1-8,共8页Journal of Shanghai Ship and Shipping Research Institute

摘　　要：高海况下风浪阻力对客滚船航速预报的准确性有很大影响。对此,以某型客滚船为例,分别采用二维方法和三维方法预报船舶升沉和纵摇运动,采用全浪向波浪增阻预报方法SNNM计算波浪增阻,在此基础上开展高海况下的功率航速预报,并与模型试验结果进行对比分析。研究表明:当航速较低时,采用二维方法与三维方法预报的升沉运动结果的精度接近,随着速度的增加,二者的差异变大;当航速较高时,采用三维方法预报的纵摇结果比试验结果大,采用二维方法预报的纵摇结果比试验结果小;长波范围内采用SNNM方法预报的波浪增阻偏小,当谱峰周期为7 s和9 s时,采用SNNM方法近似预报的功率与试验值较为接近,但当谱峰周期变大时,近似预报结果偏小;整体来看,采用SNNM方法得到的航速预报值比试验值大。The wind and wave resistance in high state of sea has significant impact on the accuracy of speed prediction for passenger and roll on/roll off ships.A type of passenger roll on/roll off ship is studied in this regard.Two-dimensional and three-dimensional methods are used to predict the ship’s heave and pitch motion,respectively,and the full wave direction wave drag prediction method SNNM is used to calculate the wave drag.The obtained results are compared with corresponding model test results.The research shows that when the speed is low,the results of the heave motion prediction by using two-dimensional and three-dimensional methods are close,but the difference between them develops as the speed goes up;When the speed is high,the pitch predictions from the three-dimensional method are higher than the experimental results,while those from the two-dimensional method are lower than experimental results;The wave drag increase calculated by the SNNM method is smaller than experiment results in long wave range.When the spectral peak period is 7 s and 9 s,the power prediction calculated according to the SNNM wave drag increase approximation is similar to the experimental value.However,for longer spectral peak period,the prediction results become smaller than experiment results;In general,the SNNM approximation results may lead to an erroneous higher speed prediction.

关 键 词：功率航速 风浪阻力 高海况 势流理论 辐射能量 

分 类 号：U661.3[交通运输工程—船舶及航道工程]