船舶操纵中各种制动效果的比较

船舶操纵中的制动效果是评价一艘船整体性能的一项重要指标。对于不同船型、不同吨位的船舶采用不同的制动方法,直接涉及到船舶的安全。通过船舶操纵模拟器,设定测试条件,对船舶操纵中倒车制动、Z型操纵制动、满舵旋回制动、拖锚制动、拖轮协助制动效果进行试验,得出各种制动效果的差异,比较说明各种制动效果的适用场合,以利船长、驾驶员选择适合当时环境自身条件状况的制动方法,安全的操纵船舶。     

船舶紧急制动新方法

本文基于增加船体或附体阻力进行紧急停船的方式,提出一种将船舶艉封板处艉封板落入水中的新型船舶紧急制动方法。本文基于STAR-CCM+,运用平均雷诺数方程和Realizable k-ε湍流模型,对船舶采用提出的制动方法制动时的阻力进行预报。并与传统的制动方法预报阻力进行比较发现,本文提出的新型船舶制动方法合理、有效,并具有较强的工程研究意义。     

船舶紧急制动新方法

基于增加船体或附体阻力进行紧急停船的方式,提出一种将船舶艉封板落入水中的新型船舶紧急制动方法。基于STAR-CCM+,运用平均雷诺数方程和Realizable k-ε湍流模型,对船舶采用这一制动方法时的阻力进行预报。与传统的制动方法预报阻力进行对比发现,新型船舶制动方法更为合理、有效,具有较强的工程意义。     

考虑船体惯性的蒸汽动力船舶制动能力简易分析方法

在论述现有蒸汽动力船舶制动能力分析大多集中于动力系统本身的变工况过程、没有充分考虑船体惯性影响的基础上,通过建立船体惯性影响下的蒸汽动力船舶制动过程、对比母型船舶得到允许实施全速倒车制动的正车航速、根据部分航速下的滑行数据建立船体滑行速度与滑行时间的关系等,形成了考虑船体惯性的蒸汽动力船舶制动能力简易分析方法。该方法得到的结论偏于保守,对于蒸汽动力船舶的机动性指标论证和试验试航等,具有指导意义。     

船舶紧急制动方式之帆帘水止

基于增加船舶附加阻力进行紧急停船的方式,提出一种将船舶帆帘组释放入水中的新型船舶紧急制动方法。基于STARCCM+,运用平均雷诺数方程和Realizable k-ε湍流模型,对船舶采用这一制动方法时的阻力进行预报。通过和不释放帆帘组入水制动工况及主机倒车对比发现,新方案能够为船舶提供大量的阻力,使船舶可以快速制动。再通过计算各速度点下帆帘组内侧面载荷,发现帆帘组帆帘内侧面载荷远远小于现有消防水带材料工作压力,因此现有消防水带材料为新方案的实现提供了进一步可能。     

一种有效近似建模方法及船舶耐波性代理模型构建

船舶耐波性能预报计算过程复杂,会受到诸多设计变量的影响;且采用高精度商业软件如CFD预报船舶性能的计算代价非常高。文章采用拉丁超立方方法进行了设计空间抽样。定义了一个新的综合衡准指标来表达船舶耐波性能,即短期和长期作用下船舶非工作时间百分数。考虑了船舶耐波性能中的五个运动方向：横摇、纵摇、转艏、横荡和升沉。为提高船舶耐波性能计算效率,一种有效的近似建模方法—单参数Lagrangian 支持向量回归算法被用于训练并构建代理模型以预报船舶耐波性能,且该算法是由作者在过去的研究工作中首次提出。以海洋平台支援船（OSV）为例,采用SPL-SVR算法预报船舶耐波性能,并与基于NAPA计算仿真结果、人工神经网络和经典支持向量回归算法进行对比。该文考虑OSV的两种速度,建立了海洋平台支援船短期作用下非工作时间百分数的耐波性能响应面模型,结果显示采用SPL-SVR算法建立的船舶耐波性能响应面模型比较适合船型初步设计的工程实际应用,并具有较高的计算效率。     

基于NUMECA的中高速艇阻力预报研究

船舶阻力预报及水动力性能分析具有广泛的应用背景。文章结合现有的资料和试验数据,利用强大的CFD软件FINE/Marine对某中高速艇进行了阻力预报,计算表明,该方法能取得良好的精度,并可以清晰直观地显示流场的各种细节,形成一套适用于中高速艇的快速有效、切实可行的阻力预报方法。此外,研究了附体及其他船型参数对船舶阻力性能的影响,并进行了阻力性能影响分析,具有一定的实用意义。     

船舶综合性能预报系统

从船舶航速预报、耐波性能和操纵性能预报的市场需求出发,分析了国内外船舶综合性能预报的现状,详细介绍了由上海船舶运输科学研究所承担,中国船舶工业集团第708所、中国船舶重工集团第702所参加开发的船舶综合性能预报系统(SPPS1.0)。该预报系统首次将计算机网络技术、母型船航速预报技术和优良船型水动力试验动态数据库有机结合起来,并应用耐波性理论、操纵性理论,建立起依托互联网,面向船舶行业,实时远程预报船舶性能的共性技术平台;开发的系统软件有效解决了数据库中核心技术资源的保密性和全行业共享应用的矛盾,具有良好实用性和预报指标的先进性。     

海港水域强潮流影响船舶作业条件和总平面布置

详细论述了强潮流对大型船舶出入港口水域航行、靠离泊和操船作业的影响，就强潮流流速作用下，进出港航道设计、防波堤口门设计、船舶制动水域、船舶回旋水域、船舶靠离泊以及系泊作业条件和有关总平面 布置问题提出探讨性意见。同时，在研究了船舶运动机理，分析总结了国内外各种船舶实验资料的基础上提出了计算船舶在码头前水域制动距离的概化公式以及在强潮流条件下计算港池回旋水域的概化公式。     

“船舶综合性能快速预报系统”获2008年“中国航海学会科学技术奖”二等奖

由上海船舶运输科学研究所、中国船舶工业集团公司第708研究所、中国船舶重工集团公司第702研究所联合研制的“船舶综合性能快速预报系统”荣获2008年“中国航海学会科学技术奖”二等奖。“船舶综合性能快速预报系统”基于船舶水动力性能理论,将计算机网络技术、母型法航速预报     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.