ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
ABSTRACT Xiangshan Bay characterized by typical bedrock and silt is a long and narrow coast waters. It is both a traditional shellfish and algae breeding base and a frequent human activity area, where the environmental pollution is increasingly severe. Simulating pollutant transport process and forecasting ...
ABSTRACT We collected and analyzed monitoring data sets in Tokyo Bay, including measurements of detailed time series of vertical profiles of water quality for one year period to enhance modeling of light intensity and phytoplankton dynamics in the bay. We modeled the relationship among PAR and chlorophyll ...
ABSTRACT: The purpose of this research is to investigate the feasibility of a solarpowered underwater glider for realising a long-term and wide-ranging underwater cruise. The SORA glider equipped with two thrustors and amorphous-silicon solar panels was firstly developed as a test-bed vehicle of the ...
ABSTRACT: A survey was conducted to identify the actual changes of the seabed environment of Matsushima Bay after the 2011 Tohoku earthquake and tsunami using compact side-scan sonar. Three different seabed topographies were surveyed: a submerged breakwater, an eelgrass bed around oyster farms, and ...
ABSTRACT: Seasonal sand accumulation processes in Kirinda Fishery Harbour was studied using field data and numerically reproduced results. In order to explain the bottom topography variation occurred during February 2005 - February 2006 period in the vicinity of the harbour, a 2DH numerical model, ...
ABSTRACT: This paper presents groins with a clear opening in their cross section as a tool for protecting the shore area. The opening allows water circulation and flushing in the near shore zone while protecting the swimmers from direct exposure to wave attack. The possible impact of the opening size ...
The March 2011 earthquake off the Pacific coast of Tohoku was followed by great tsunami waves. The objectives of the present study are to apply the unstructured-mesh model FVCOM to tsunami propagation in Tokyo Bay and ports in the bay with high spatial resolution and to understand the mechanisms governing ...
ABSTRACT The study presented here describes the geometry optimization of the Sea wave Slot cone Generator (SSG) overtopping wave energy converter as part of the feasibility study for the implementation of the device in the development plan of Hanstholm harbour in Denmark. The total length of the new ...
ABSTRACT The development of wave energy conversion has reached the pre-commercialization stage; with many developers ready for full-scale grid-connected deployment. In many cases developers are required to produce an Environmental Impact Assessment (EIA) to be granted permission for development of ...
ABSTRACT The present work aims to find out the applicability of the bulge concept used in the Anaconda (Chaplin et al., 2011) on a possible seabed version. The tested model is a long rectangular duct covered with an elastic membrane and placed on the seabed, parallel to wave propagation. The tension ...
ABSTRACT The paper covers the statement of simulation problem for ice loads acting on ship hull. The application of probabilistic approach to ice loads" estimation is substantiated. The main theoretical propositions as well as the general algorithm and the basic scheme of simulation process implementation ...
ABSTRACT The importance of natural gas in the European Countries has grown significantly since the first years of Millennium 2000. The increasing popularity of this fuel source is mainly related to relevant low emissions to the environment and its flexibility in energy production. In order to meet ...
ABSTRACT: Carbon steel pipelines are used extensively in the oil and gas industry for sub-sea applications. Usually they are cathodically protected and have exterior surface protective coatings. Where these are ineffective or not used, the evolution of weld zone corrosion with time may be of interest. ...
ABSTRACT: The subsea tieback routes of the Medway Field Development cross a mobile seabed with large sand waves and numerous megaripples. To allow the pipelines to be laid, without excessive free spanning, two lay corridors were pre-swept using a Trailing Suction Hopper Dredger (TSHD). The requirement ...
ABSTRACT: The RANS computations of a ship with sink and trim motion in head waves are presented. The added resistance, heave and pitch motions are investigated numerically. The computations are based on volume of fluid (VOF) and dynamic deformation mesh methods, discretized by finite volume method ...
ABSTRACT: In this article the author established the mathematical model of system identification of composite trimaran rolling motion model based on the genetic optimization algorithm, using VB language to write the recognition software, designed and manufactured a composite trimaran test model, doing ...
The objective of this paper is to apply IMO "severe wind and rolling criterion (weather criterion)" for anchor handling vessels during operation. So far, this criterion is used for merchant ships greater than a certain size and of conventional hull forms but it is not mandatory for special purpose ships ...
ABSTRACT: This paper proposes a procedure to quantify dangers of maneuvering ships in ship-to-ship lightering operations. In the previous study, operational limitations as a function of 2-D intra-ship position, due to static mechanisms of hydrodynamic interaction were proposed. The dynamic evaluation ...
ABSTRACT: The bulbous bow is often designed to reduce the resistance of the deep sea trawlers. Firstly, the viscous flow around ship hull is simulated based on Computational Fluid Dynamics (CFD) software FLUENT. The Volume of Fluid method (VOF) has been used with FLUENT for capture the free surface ...
ABSTRACT: Application of mechanical collet connector has become increasingly common in ocean engineering. Meanwhile, the locking mechanism of the mechanical collect connector has a direct impact on the reliability of the connector. In this paper, a locking mechanism design was proposed for a collet ...