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.     

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.     

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.     

第26届国际水波与浮体研讨会(IWWWFB)(英文)

<正>17-20 April 2011, Athens, Greece 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. The Workshop was initiated by Professor D. V. Evans (University of Bristol) and Professor J. N. Newman (MIT) following informal meetings between their     

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.     

针对PPTC 2015测试工况开展的基于OpenFOAM的空泡螺旋桨在倾斜轴条件下水动力性能分析（英文）

In this paper, we present our analysis of the non-cavitating and cavitating unsteady performances of the Potsdam Propeller Test Case(PPTC) in oblique flow. For our calculations, we used the Reynolds-averaged Navier-Stokes equation(RANSE) solver from the open-source Open FOAM libraries. We selected the homogeneous mixture approach to solve for multiphase flow with phase change, using the volume of fluid(Vo F) approach to solve the multiphase flow and modeling the mass transfer between vapor and water with the Schnerr-Sauer model. Comparing the model results with the experimental measurements collected during the Second Workshop on Cavitation and Propeller Performance – SMP'15 enabled our assessment of the reliability of the open-source calculations. Comparisons with the numerical data collected during the workshop enabled further analysis of the reliability of different flow solvers from which we produced an overview of recommended guidelines(mesh arrangements and solver setups) for accurate numerical prediction even in off-design conditions. Lastly, we propose a number of calculations using the boundary element method developed at the University of Genoa for assessing the reliability of this dated but still widely adopted approach for design and optimization in the preliminary stages of very demanding test cases.     

第25届国际水波与浮体研讨会(英文)

<正>9-12 May 2010:Harbin Engineering University, Harbin,ChinaThe International Workshop on Water Waves and Floating Bodies is an annual meeting of engineers and scientists with a particular interest in water waves     

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.     

Research on the influence of action between fin and anti-rolling tank on the integrated stabilization effect

Through analyzing the roll model of the integrated system of fin and anti-rolling tank, this paper uses binomial equation to simplify the module and check how the approximate parameters simulate the original function. Based on the simplified module, the influence of fin and anti-rolling tank on the coefficient items of the roll module is discussed, and the influencing factors between fin and anti-rolling tank are analysed. And through simulation, the influence of action between fin and anti-rolling tank on the static characteristics, and the integrated stabilization effect, are analyzed.