| 长峰不规则波与短峰不规则波对船舶失速影响的分析 |
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| 引用本文： | 王艳霞,陈京普,魏锦芳. 长峰不规则波与短峰不规则波对船舶失速影响的分析[J]. 中国造船, 2012, 53(Z1): 13-18 |
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| 作者姓名： | 王艳霞 陈京普 魏锦芳 |
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| 作者单位： | 中国船舶科学研究中心上海分部,上海,200011 |
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| 摘 要： | 船舶在波浪中的失速系数fw是新造船舶能效设计指数EEDI公式中的一个重要参数,它的计算方法是当前的一个热点。考虑到真实海浪常呈现三维特性,采用了国际海事组织(IMO)的GHG会议进展中推荐的频率谱以及ITTC建议的方向扩展函数,分析研究长峰不规则波与短峰不规则波对船舶失速的影响。计算结果表明,长峰不规则波与短峰不规则波中船舶增阻是有差别的,从而对fw也产生一定的影响。
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| 关 键 词： | 失速系数 EEDI 长峰不规则波 短峰不规则波 |
Analysis of Decrease of Ship Speed in Long-Crested and Short-Crested Irregular Waves |
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| WANG Yanxia , CHEN Jingpu , WEI Jinfang. Analysis of Decrease of Ship Speed in Long-Crested and Short-Crested Irregular Waves[J]. Shipbuilding of China, 2012, 53(Z1): 13-18 |
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| Authors: | WANG Yanxia CHEN Jingpu WEI Jinfang |
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| Affiliation: | (China Ship Scientific Research Center,Shanghai 200011,China) |
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| Abstract: | Coefficient fw for the decrease of ship speed is one of the important parameters in energy efficient design index(EEDI) for new ships.Research on its calculation method is a hot point now.Considering 3D characters of real seas,the frequency spectrum and the angular distribution function,recommended by IMO and ITTC respectively,are adopted to analyze the influence of long-crested and short-crested irregular waves on the decrease of ship speed.The results show that the added resistance due to long and short-crested waves are different,which effect the fw in some extent. |
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| Keywords: | decrease of ship speed EEDI long-crested irregular wave short-crested irregular wave |
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