
第33卷第2期 2010年1月
文章编号:1674-5949(2010)02-0104-06
上海船舶运输科学研究所学报 JOURNAL OF SSSRI
Vol.33 Na. 2 Dec.2010
肥大型运输船在波浪中阻力增加及失速预报
蒋永旭,董国祥,高家铺
(上海船舶运输科学研究所运输系统事业部,上海200135)
摘要:目前,预报船舶在波浪中的阻力增加仍然采用切片理论方法,通过上海船舶运输科学研究所耐波性性能预报程序对迎浪状态下肥大型运输船在波浪中的阻力增加进行了计算,并将理论计算结果与船模试验结果进行比较,此预报程序可用于工程计算。再以阻力功率恒定法为基础,编制失速计算程序,结合静水和波浪阻力试验、自航试验和散水试验数据,求出船舶在波浪中失速。理论预报F。(失速系数)结果与通过模型试验值预报F。结果有较好的吻合性,该失速计算程序适用于肥大型运输船设计初期的航速估算及今后用于实船在不同海况的航速修正。
关键词:阻力增加;频率响应曲线;失速;失速系数
中图分类号:U661.311
文献标志码:A
Large Full Transport Ship Added Resistance in Wave and Speed Loss Prediction
JIANGYong-ru,DONGGuo-riang,GAOJia-yong
(Transportation System Division,Shanghai Ship and Shipping Research
Institute,Shanghai200135,China)
Abstract; Nowadays one of the methods of prediction about the ship resistance increases in wave is still the strip theory. The author calculated the Large Full Transport ship resistance increases in handing wave by the SSSRI program of seakeeping per formance prediction, compared the theoretical calculation result and the experimental results, so the program can be apply in the engineering calculation, The author also developed the calculation the speed loss program base on RTIM method, calculated the ship speed loss in wave with the data of resistance test in still water and wave, self-propelled test and open water test by the program. There is great agreement with speed loss coefficient (F)through theoretical prediction and model test, this speed loss program can be applied to speed estimation in Large Full Transport ship design beginning stage and ship speed correction in different sea state.
Key words; resistance increases; frequency response curve; speed loss; speed loss coefficient 0前言
船舶是海上航行交通工具,研究波浪对船舶的影响,或者说船舶在波浪中的性能是非常重要的,船舶作为航运交通工具,应具有良好的航行性能、工作性能和足够的强度。耐波性是衡量船舶性能优劣的一个重要指标,良好的耐波性有利于船舶在高海况条件下安全航行,为乘客提供较舒服的旅途环境,也能为军用高性能船舶的武器装备提供良好的使用条件。当今,船东对船舶航运经济性的要求越来越高,在静水中航行性能优良的船型,在波浪中航行性能未必是最优良的,因此,船舶在波浪中的性能已日益受到重视[。最近,日本在IMO会议上提出评估船舶航运能效指数EEDI公式中考虑船舶失速影响的方案得到广泛关注,在节能减
收稿日期:2010-07-01
作者简介:蒋永旭(1984-),男,广西省桂林市人,助理工程师,主要从事船舶水动力性能研究。万方数据