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“达维”台风是建国以来登陆长江以北地区最强的台风。应用Jelesnianski台风参数模型、MIKE-SW波浪模型和MIKE-FM潮流模型,研究该台风在江苏海域登陆过程中台风浪、风暴潮的分布特征。计算结果表明,台风参数模型和台风浪模型验证较好,能够为风暴潮模拟提供准确的动力条件。台风过境期间,连云港海域最大风速超过40 ms,产生明显的海面强烈上升现象,台风中心附近水域最大风暴增水为1.7~1.8 m,高潮时刻风暴增水为0.6~0.7 m。该模拟系统能够准确模拟台风过境期间连云港海域风暴潮变化过程,对防灾减灾的数值预报具有重要价值。 相似文献
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舟山海域台风浪数值模拟 总被引:1,自引:0,他引:1
《水道港口》2014,(6):582-588
为提高台风浪模拟的精度,将Holland台风风场模型与CCMP背景风场相叠加,构造合成风场来驱动SWAN模型。运用Jason-2卫星数据进行验证,比较了不同的最大风速半径计算公式和Holland B参数组合构造出的合成风场对模拟结果影响。选取最优组合,运用自嵌套,模拟了台风"米雷"通过舟山海域的波浪场。结果表明舟山群岛对台风浪的阻挡效果明显,台风期间舟山东部海域波高大、周期长且涌浪影响明显,西部海域波高较小且以风浪影响为主。 相似文献
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《水道港口》2021,(2)
研究台风风场结构中Holland B参数对台风浪模拟结果的影响。采用ERA-5背景风场与Holland经验风场叠加构成的台风输入风场,利用MIKE21 SW波浪数学模型进行南海大范围台风浪数值模拟;结合1822号"山竹"台风期间的实测风浪数据,研究Holland B参数对台风风场构造的影响机理,对四种常用Holland B参数计算公式的各个模拟值进行验证,并对其进行对比分析。结果表明:四个Holland B参数公式计算得到的风速和有效波高模拟值均与实测值有较好一致性,B_1参数公式的计算结果与实测值吻合最好;不同Holland B参数对风向和平均波向基本不产生影响,其模型模拟值与实测值吻合度较高;通过台风场与波浪场的空间分布对比分析,为沿海地区台风期间防灾减灾提供参考建议。 相似文献
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“韦帕”台风过程中南黄海海域流场研究 总被引:1,自引:0,他引:1
《水道港口》2013,(3):225-231
台风经过海域时,会造成海面强风以及特殊分布的波浪场,可能引起潮流场的强烈变化。为深入探讨台风过程中流场的变化,研究风应力与辐射应力对潮流场的作用,选用WRF模型、第三代海浪模式SWAN、三维水动力模型FVCOM,针对"0713"号"韦帕"台风期间的台风风场、潮流场、波浪场进行数值模拟。结果表明WRF-SWAN-FVCOM模式能够较好地模拟"韦帕"台风期间南黄海海域流场。波浪和流场受旋转台风影响均出现旋转特性,但与台风旋转风场有一定延迟。与纯潮流场相比,风应力和波浪辐射应力对表层流场产生明显影响,风场影响最为显著,波浪辐射应力使南黄海海域沿岸流发生一定增大。 相似文献
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将影响江苏的台风按路径分为四类:登陆北上型、外海活动型、正面登陆型以及特殊类型,研究设计台风的中心低气压、最大风速与路径,给出10个影响江苏的可能最大台风。模型模拟10个可能最大台风影响下,江苏沿海可能最大台风增水,给出各类型台风的增水岸段以及增水幅度。 相似文献
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《水道港口》2017,(2):143-149
为研究江苏沿海海域受双台风布拉万和天秤的影响情况,应用Holland模型与ERA背景风场数据构建双台风布拉万和天秤的模拟风场,结合MIKE SW模块进行台风浪的数值模拟试验,通过与卫星轨道数据、实测站点数据对比对模拟的有效波高进行了验证,研究了东中国海范围和江苏沿海海域的波浪场(混合浪、风浪和涌浪)特征。其中,在模拟风场的构建中,比例系数e至为关键,通过进行参数试验确定较优系数值。研究结果表明台风布拉万主要以风浪形式影响江苏沿海海域,出现的风浪最大值为10.4 m,台风天秤是以涌浪形式影响,涌浪最大值为2.4 m,且台风布拉万的影响强度明显大于台风天秤。 相似文献
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《船舶与海洋工程学报》2014,(2)
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. 相似文献
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《船舶与海洋工程学报》2014,(1):126-126
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. 相似文献
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联合作战计划和执行系统 总被引:2,自引:1,他引:1
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。 相似文献
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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. 相似文献
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《船舶与海洋工程学报》2014,(1)
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. 相似文献
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《船舶与海洋工程学报》2014,(2)
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. 相似文献
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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). 相似文献
The answer is China South Port Group (Hong Kong, Shenzhen and Guangzhou). 相似文献
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Gunnar Alexandersson Staffan Hultén Frode Longva 《Research in Transportation Economics》2010,29(1):212-218
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. 相似文献