ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Abstract A practical multi-objective optimization tool, named OPTShip-SJTU, is utilized here to optimize both of the resistance and seakeeping performance for a surface combatant DTMB Model 5415. During the optimization procedure, free-form deformation (FFD) method is used as parametric hull surface ...
Abstract Coastal erosion caused by structures due to exploitation is a serious problem for coastal management in Taiwan. These structures disturb the continuity of the original littoral sediment transports, resulting in retreats of the shorelines in the downstream areas. This paper tries to assess ...
Abstract One of the critical issues for large container ships is the vibration of the hull girder due to wave impact which leads to excitation of whipping responses. This study presents analysis guidance to determine values of dynamic bending moments considering the effects due to whipping which are ...
Abstract The paper proposes a numerical method for analyzing nonlinear wave loads using a hydroelastic model. The numerical analysis method utilizes a 3-D Green function method and a 2-D momentum model, which are coupled in the time domain. The computational results were compared with those of a model ...
Abstract To quantify the detailed mechanisms that cause sedimentation at the tidal inlets and deformation of shore line in the Messolonghi-Aetoliko lagoonal system, the Litpack numerical simulation model was applied. The study focuses on the longshore sediment transport as well as the coastline evolution, ...
Abstract Generally the multidisciplinary design optimization in ship design only considers the impact of certainties with ignoring the existence of uncertainties in the design. The results of the optimization obviously cannot really guarantee the feasibility of ship hull and excellence of sailing performance. ...
Abstract Direct Electrical Heating (DEH) of offshore pipelines is an established cost-efficient and environmental friendly method for flow assurance in offshore oil production compared to traditional methods such as chemical injection. The first DEH system was installed in year 2000 in the North Sea, ...
Abstract The grounded or collided oil tankers are often subjected to periodic motions, which excites the liquid sloshing inside the cargo tanks and influences the oil spilling. This paper presents a systematic numerical investigation of the effects of the tank motions on the oil spilling from damaged ...
Abstract In order to address icing on ships, we develop sea spray meters, the sea spray particle counter (SPC) and the marine rain gauge type spray gauge (MRS), for measuring the spray particles and the amount of spray. The laboratory tests indicate that the amount of spray obtained by the MRS is close ...
Abstract With the rapid development of harbor construction in China and in other developing countries, environmental protection and ecological harmony have become decisive factors in harbor planning, design and construction management. Green harbor concept and ecological strategies are important means ...
Abstract: Due to a limited number and poor quality of the available core samples, sandstone analogues are required for a research project on sand production in Kazakhstan. A consistent sample preparation method is essential to achieve repeatable test results in terms of the deformational characteristics ...
Abstract The wind energy industry is growing worldwide. Recently, a number of physical and numerical modeling studies have been carried out in Europe to implement the offshore wind turbine technology, as well as the wind resource. Accordingly, the consideration of the possible environmental impacts ...
Abstract A fatigue analysis of the high-density polyethylene (HDPE) floating system of fish cage is presented. The fatigue analysis is based on the deterministic method and the finite element method combined with a hydrodynamic model. The stress of the floating collar is evaluated based on the joint ...
Abstract Artificial tidal flats are constructed using dredge soil with high silt-clay content, which is generated during the dredging of port channels and anchorages. Experimental tidal flats were constructed in the sea to investigate the positive effects of these habitats on short-necked clam populations. ...
Abstract The energy efficiency evaluation of trawlers becomes more and more relevant as the trend of the government laws follows the path of restrictions to new constructions to encourage improvement to existing vessels, often equipped with outdated technologies. The two conditions a trawler need to ...
Abstract Details of the foundation systems of two meteorological masts which are essential part of Korea's 2.5 GW off-shore wind power project, including the design and installation processes, are described. The foundation type of each mast was conceived based on costs, efficiency, and risks at the ...
Abstract The 2004 Indian Ocean tsunami has been leaving a number of scientific questions related to sediment transport process. The questions are not only about the involving process during the tsunami waves propagation, but also about the recovery process of the coastal morphology as shown around ...
Abstract This study investigated the influence of a giant tsunami by the earthquake along the Nankai Trough on the benthic environment in terms of heavy-metal pollution in Osaka Bay as a pilot ocean. The high-resolution tsunami-tide and particle tracking simulations demonstrated that the marked resuspension ...
Abstract In this paper, in order to guarantee the security of crude oil transfer in Floating Productive Storage and Offloading (FPSO)’s production, the risky factors in lightering operations are analyzed from Men-Vessels- Environment-Management aspects according to its features. Risk assessment criteria ...