| VLCC油船波浪增阻预报方法的实用修正 |
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| 引用本文： | 杨春蕾,朱仁传,莫中华,洪亮,周文俊,缪国平. VLCC油船波浪增阻预报方法的实用修正[J]. 海洋工程, 2018, 36(3): 89-95 |
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| 作者姓名： | 杨春蕾 朱仁传 莫中华 洪亮 周文俊 缪国平 |
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| 作者单位： | 江南造船(集团)有限责任公司江南研究院;上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心;南通中远川崎船舶工程有限公司 |
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| 基金项目： | 国家自然科学基金面上项目(51579147，51479117)；973项目(2014CB046203) |
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| 摘 要： | 近年来随着船舶环保和营运性能要求更高,波浪增阻预报正变得越来越重要。由于存在假设和简化,势流理论方法的短波增阻预报精度差,而经验方法在不同船型中的适用性不强。以有航速VLCC船迎浪航行为例,考虑吃水和航速影响,对理论和半经验方法的波浪增阻结果进行验证和比较分析,并总结出适用特定船型的快速精确预报方法。理论方法基于水平线段移动脉动源的三维面元法求解速度势问题,进而采用三维船体辐射能量法得到船舶辐射增阻,基于二阶波浪力定常分量公式计算得到绕射增阻;经验方法采用ISO15016-2015推荐的STAWAVE2方法。通过分析辐射和绕射增阻占比,讨论了目前方法的适用范围,进而对半经验方法的修正系数进行了研究,给出了反映相似船型和航速特征的改进公式。
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| 关 键 词： | 辐射增阻 绕射增阻 三维面元法 STAWAVE2 |
Investigation on practical correction for added resistance prediction of tankers |
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| YANG Chunlei,ZHU Renchuan,MO Zhonghu,HONG Liang,ZHOU Wenjun and MIAO Guoping. Investigation on practical correction for added resistance prediction of tankers[J]. The Ocean Engineering, 2018, 36(3): 89-95 |
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| Authors: | YANG Chunlei ZHU Renchuan MO Zhonghu HONG Liang ZHOU Wenjun MIAO Guoping |
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| Affiliation: | Jiangnan Institute of Technology, Jiangnan Shipyard (Group) Co., Ltd., Shanghai 201913, China,State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China,Nantong COSCO KHI Ship Engineering Co., Ltd., Nantong 226005, China,State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China,State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China and State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China |
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| Abstract: | In recent years, prediction of added resistance in waves of ships is getting more and more important with the higher requirement of environmental protection and operation performance in service. Due to the hypothesis and predigesting, theoretical methods give low accurate results for added resistance due to short waves, and semi-empirical approaches are limited to hull forms. In the paper, results of theoretical and semi-empirical methods for VLCC ships at constant speed and head waves are validated and analyzed comparably, and draft and speed effects are taken into account. Potential problems are solved by 3-D panel method based on the horizontal line segment translating and pulsating source panel, and added resistance due to the radiation is obtained by 3D radiation energy method for ships, while the one due to the diffraction is obtained by the second order steady-state force formula. STAWAVE2 method recommended by ISO15016-2015 is adopted in the semi-empirical method. The range of application of the present methods is discussed by analysis of the added resistance due to radiation and diffraction. The correction parameters of the semi-empirical method are discussed; furthermore the improved formulas which reflect the characteristics of similar ship forms are presented. |
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| Keywords: | added resistance due to radiation added resistance due to the diffraction 3-D panel method STAWAVE2 |
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