30th International Workshop on Water Waves and Floating Bodies

About the Workshop...
The International Workshop on Water Waves and Floating Bodies is an annual meeting of mathematicians and engineers with a particular interest in water waves and their effects on floating and submerged marine structures. The IWWWFB was initiated by Professor D.V. Evans （University of Bristol） and Professor J.N. Newman （MIT） following informal meetings between their research groups in 1984. First intended to promote communications between workers in the UK and the USA, the interest and participation quickly spread to include researchers from many other countries around the world. The workshop places particular emphasis on the participation of younger researchers, on the stimulation of discussions between engineers and scientists, and to the presentation of preliminary basic scientific work before its publication elsewhere. The workshop is an important reference point for organizing and spreading knowledge in this area. In particular, the workshop proceedings are freely accessible through the dedicated internet address www.iwwwfb.org where all contributions from 1986 on can be found.     

第28届国际水波与浮体研讨会(英文)

Marseille,France,7-10 April 2013 The International Workshop on Water Waves and Floating Bodies is an annual meeting of engineers and scientists with a particular interest in water waves and their effects on floating and submerged bodies.In the organization and conduct of the Workshop,     

第30届水波和浮体国际会议(英文)

正12-15th April 2015 in Bristol UK,hosted jointly by the Universities of Bristol and Bath About the Workshop...The International Workshop on Water Waves and Floating Bodies is an annual meeting of mathematicians and engineers with a particular interest in water waves and their effects on floating and submerged marine structures.The IWWWFB was initiated by     

第31届水波与浮体国际会议(IWWWFB 2016)（英文）

<正>April 3–6,2016Plymouth,Michigan,USAThe International Workshop on Water Waves and Floating Bodies is an annual meeting of engineers and scientists with a particular interest in water waves and their effects on floating and submerged bodies.In the organization and conduct of the Workshop,particular emphasis is given to the participation of younger researchers,interdisciplinary discussion between engineers and scientists,and the presentation of preliminary work before it is published elsewhere.     

International Conference on Ships and Offshore Structures(ICSOS)

<正>17–19 September 2018,Chalmers University of Technology,Gothenburg,Sweden The third International Conference on Ships and Offshore Structures(ICSOS)will be hosted at Chalmers University of Technology in Gothenburg,Sweden,from 17.09.2018 to 19.09.2018 in agreement and cooperation with Professor Jeom Kee Paik and his Journal of Ships and Offshore Structures.The conference seeks to provide a platform for selected high quality papers,from where     

第九届国际船舶与海洋水动力学研讨会(IWSH'2015)（英文）

<正>The 9th International Workshop on Ship and Marine Hydrodynamics(IWSH'2015)will be held in Glasgow,UK on 26-28 August 2015.Aim:The IWSH conference was first held in Wuhan,China in 1999.Then it was held in Wuhan,Shanghai,Zhenjiang,Harbin,Shanghai and Seoul in subsequent every two years.These Conferences have drawn a variety of international delegates with a common interest in ship and     

The 9th International Workshop on Ship and Marine Hydrodynamics(IWSH’2015)

The 9th International Workshop on Ship and Marine Hydrodynamics(IWSH’2015)will be held in Glasgow,UK on 26-28 August 2015.Aim:The IWSH conference was first held in Wuhan,China in 1999.Then it was held in Wuhan,Shanghai,Zhenjiang,Harbin,Shanghai and Seoul in subsequent every two years.These Conferences have drawn a variety of international delegates with a common interest in ship and     

国际航运界的盛会——’98海运政策与发展国际研讨会回顾

The International Workshop on Shipping Pohcies and Development successfully concluded on May 12th, however its positive and far - reaching effects are still lingering in every delegate' s mind. 150 delegates who are engaged in shipping industry gathered from around the world, discussed and exchanged views on the main topic of comm'non intereat - - the development of international shipping in the 21st century.     

FPSO关键系统风险分析(英文)

Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offloading system and fire accidents were analyzed based on the floating production, storage and offloading (FPSO) features. Fault tree analysis (FTA), and failure modes and effects analysis (FMEA) methods were examined based on information already researched on modules of relex reliability studio (RRS). Equipment failures were also analyzed qualitatively by establishing a fault tree and Boolean structure function based on the shortage of failure cases, statistical data, and risk control measures examined. Failure modes of fire accident were classified according to the different areas of fire occurrences during the FMEA process, using risk priority number (RPN) methods to evaluate their severity rank. The qualitative analysis of FTA gave the basic insight of forming the failure modes of FPSO offloading, and the fire FMEA gave the priorities and suggested processes. The research has practical importance for the security analysis problems of FPSO.     

ABSTRACTS

FMC convenes Global Regulatory Summit with officials from China and European Commission
Maritime regulators from the United States, the People＇s Republic of China （PRC）, and the European Commission met and conferred in Washington, D.C. on December 17, 2013 to consider the evolving international maritime landscape. The officials had open and candid discussions on their differing regulatory frameworks and the potential effects of carrier cooperation on international trade. While most of the discussions were held privately by the regulators, FMC Chairman Mario Cordero and members of the delegations from China and Europe spoke briefly about their regulatory summit publicly at the end of the day. The summit was early on billed as a global regulatory summit on the P3 Alliance,     

The 7th International Workshop on Ship Hydrodynamics (IWSH’2011)

The 7th International Workshop on Ship Hydrodynamics (IWSH’2011) will be held in Shanghai, China on 16-19 September 2011. The IWSH conference was first held in Wuhan, China in 1999. Then it was held in Wuhan, Shanghai, Zhenjiang and Harbin in subsequent every two years.     

Readers’Guide

<正>Dear readers,welcome to read this issue of ourjournal,Ports of China.At the 15th National Congress of the ChineseCommunist Party,an all-round and profound elucidationwas made on a series of important issues concerning thereforms and development in China.The Chinese economyis sure to greet a new round of massive development.Theports must seriously study the question of how to seize theopportunities.Mr.Che jinhe,director of the Rizhao PortAuthority of Shandong Province,Mr.Che Xiadong,director,and Mr.Chen Kongmei,from Taizhou PortAuthority of Zhejiang Province,aired their new views onthe development of their respective ports in their articles.(P6—9)     

Numerical computation of motions and structural loads for large containership using 3D Rankine panel method

In this paper, we present the results of our numerical seakeeping analyses of a 6750-TEU containership, which were subjected to the benchmark test of the 2 nd ITTC–ISSC Joint Workshop held in 2014. We performed the seakeeping analyses using three different methods based on a 3D Rankine panel method, including 1) a rigid-body solver, 2) a flexible-body solver using a beam model, and 3) a flexible-body solver using the eigenvectors of a 3D Finite Element Model(FEM). The flexible-body solvers adopt a fully coupled approach between the fluid and structure. We consider the nonlinear Froude–Krylov and restoring forces using a weakly nonlinear approach. In addition, we calculate the slamming loads on the bow flare and stern using a 2D generalized Wagner model. We compare the numerical and experimental results in terms of the linear response, the time series of the nonlinear response, and the longitudinal distribution of the sagging and hogging moments. The flexible-body solvers show good agreement with the experimental model with respect to both the linear and nonlinear results, including the high-frequency oscillations due to springing and whipping vibrations. The rigid-body solver gives similar results except for the springing and whipping.     

纵向弯矩下材料随机特性对复合材料船体可靠性的影响

The effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials under longitudinal moment were extensively studied using reliability and sensitivity calculations of a composite ship hull which was sagging.The reliability indices and failure probabilities of the ship in three kinds of failure modes (buckling,material failure,and ultimate collapse) were calculated by the surface response method and JC method.The importance factors of random variables in stochastic models,such as the model errors in predicting the ultimate longitudinal strength of ship and the longitudinal bending moment that the ship withstands,as well as the stochastic characteristics of materials in the models used,were calculated.Then,the effects of these random variables,including the stochastic characteristics of materials on the reliability index and the failure probability of ships which were sagging,were discussed with their importance factors.The results show that the effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials should be considered during the reliability assessment of composite ships.Finally,some conclusions and recommendations were given for high-speed ship design and safety assessment.     

温度、盐度和流体类型对圆柱周围湍流声学特性的影响研究（英文）

The effects of the temperature,salinity,and fluid type on the acoustic characteristics of turbulent flow around a circular cylinder were numerically investigated for the Reynolds numbers of 2.25 × 10~4,4.5 × 10~4,and 9.0 × 10~4.Various hybrid methodsReynolds-averaged Navier-Stokes(BANS) with the Ffowcs Williams and Hawkings(FWH) model,detached-eddy simulation(DES) with FWH,and large-eddy simulation with FWH-were used for the acoustic analyses,and their performances were evaluated by comparing the predicted results with the experimental data.The DES-FWH hybrid method was found to be suitable for the aero-and hydro-acoustic analysis.The hydro-acoustic measurements were performed in a silent circulation channel for the Reynolds number of 2.25 × 10~4.The results showed that the fluid temperature caused an increase in the overall sound pressure levels(OASPLs) and the maximum sound pressure levels(SPL T) for the air medium;however,it caused a decrease for the water medium.The salinity had smaller effects on the OASPL and SPLT compared to the temperature.Moreover,the main peak frequency increased with the air temperature but decreased with the water temperature,and it was nearly constant with the change in the salinity ratio.The SPLT and OASPL for the water medium were quite higher than those for the air medium.     

潜艇上方近场水下辐射噪声双峰特性的实验研究(英文)

The double-peak characteristic of underwater radiated noise in the near field on top of the target submarine was analyzed in depth on the basis of submarine test data on the sea. The contribution of three major noise sources to the radiated noise of a submarine were compared and analyzed, and emphasis was put on the original source, production mechanism, and their correlative characteristics. On the basis of analysis on underwater tracking and pass through characteristics of the target submarine, the double-peak phenomenon was reasonably interpreted. Furthermore, the correctness of the theoretical interpretation was verified adequately in real submarine tests. The double-peak phenomenon indicates that the space distributing character on submarine radiated noise are both asymmetrical with time and space, whereas that is provided with directivity. Studying the double-peak phenomenon in depth has important reference value and meaning in engineering practice for understanding the underwater radiated noise field of submarines.     

10 Towards a Safer Environment：（7）How apatite minerals remediate Pb,Zn and Mn from wastewater？

To evaluate the effectiveness of apatite mineral in removing different contaminants from low quality water in the industrial city of abha,Asir region,southwestern of Saudi Arabia two phosphatic clay dominated by apatite mineral were selected.In situ remediation experiment proved that apatite mineral has the highest affinity for Pb and removed more than 94% from initial Pb concentration.The rest of contaminants followed the descending order of:Zn>Mn>Cu>Co>Ni.The sorption of Pb,Zn and Mn onto apatite mineral was well characterized by the Langmuir model.Ternary-metal addition induced competitive sorption among the three metals,with the interfering effect of Pb>Zn>Mn.During metal retention by apatite mineral calcium and phosphate were determined in equilibrium solution.Calcium increased and phosphate decreased with increasing metal disappearance.The greatest increase of calcium and the largest phosphate reduction were found with Pb+2 sorption. This is suggested that Pb+2 retention by apatite was through the dissolution of apatite which mean release of Ca and P into solution and formation of pyromorphite(lead phosphate)as consuming of P.Obtained results suggested that there are two general mechanisms for the ability of apatite mineral to take up Pb2+,Zn+2 and Mn+2.The first is (ion-ion exchange mechanism)concerned with adsorption of ions on the solid surface followed by their diffusion into apatite mineral and the release of cations originally contained within apatite.The second is (dissolution- precipitation mechanism)concerned to the dissolution of apatite in the aqueous solution containing Pb2+,Zn+2 and Mn+2 followed by the precipitation or coprecipitation.Pb+2 desorption responding to solution pH may indicate that not all the Pb+2 was chemisorbed and fraction of Pb+2 was weakly adsorbed or complexed on the surface of apatite mineral.     

第20届海洋结构物与轮机工程国际会议(ICOCME 2018)（英文）

<正>December 17-18,2018 Barcelona,Spain The ICOCME 2018:20th International Conference on Offshore Construction and Marine Engineering aims to bring together leading academic scientists,researchers and research scholars to exchange and share their experiences and research results on all aspects of Offshore Construction and Marine Engineering.It also provides a premier interdisciplinary platform     

第2届新能源和未来能源系统国际会议（英文）

<正>22–25 September 2017,Kunming,ChinaThe Second International Conference on New Energy and Future Energy Systems(NEFES 2017)is sponsored by Yunnan Normal University.It will be held from Sept.22nd-25th,2017.The conference is a continuation of NEFES 2016.It aims to provide a platform for researchers and practitioners in both industry and academia to have a brainstorm,share their latest achievements and discuss the possible     

摩洛哥卡萨布兰卡-穆罕默迪耶沿海地区波浪能资源分析（英文）

In the last two decades, the exploitation of marine renewable energies(70% of the globe is made up of oceans), especially wave energy, has attracted great interest, not only for their high potential, but also for their high energy density. The development of wave energy is suitable for countries or regions with extensive coastline and high waves approaching the shore. This paper focuses on the study of wave potential and wave energy distribution in the Casablanca-Mohammedia nearshore area(Morocc...