ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
ABSTRACT The fluid induced dynamic properties of a floating raft system for oyster culture are investigated numerically and physically. In this numerical model, the whole raft system including floating raft and mooring lines are divided into numerous elements and nodes. The element is the basic solid ...
ABSTRACT The study was conducted from January 2008 to December 2008, focused on spatial and temporal distribution of Mnemiopsis leidyi and zooplankton populations in the south-western area of the Caspian Sea. In summer and winter M. leidyi abundance and biomass values were between 1900 ± 1400 ind/m2 ...
ABSTRACT Deep Sea Water (DSW) industry characterized by their rich mineral substances and trace metals, is suitable for multi-application developments such as fishery and algae aquaculture, medicine, food/drinking, cosmetics, and other economic value added products. The eastern region of Taiwan with ...
ABSTRACT In this study a typical gravity cage with frame anchor system is presented and a set of equations of motion for this flotation structure are derived using lumped mass method. The purpose of this study is to investigate the gravity cage dynamics under irregular wave conditions using numerical ...
ABSTRACT: Low Temperature Thermal Desalination (LTTD) process utilizes the temperature gradient between two water bodies to evaporate the warmer water at low pressures and condense the resultant fresh using the colder water to obtain high quality fresh water. National Institute of Ocean Technology ...
In order to decide design sea conditions for safety estimation and to evaluate economy and so on, on platforms proposed in the project of EEZ utilization of Japan, the database of sea conditions around Japan was established. The estimated values of wind, waves and current with the return periods of ...
The actual and potential impacts of increased pollutant concentrations bring great pressures to the health of the aquaculture ecosystem. The paper attempts to outline conceptual models that can illustrate the links between the threats and the marine aquaculture ecosystem and to select suitable indicators, ...
Sea level rise will bring very high impacts to coastal area, including increased coastal erosion, increased flooding risk, more extensive coastal inundation, changes in surface water quality and groundwater characteristics and potential loss of life. IPCC (2007) announced the global average rate is ...
Horizontal density changes in the sea have the potential to drive extreme bottom currents. The focus in this paper is on sill overflows of Atlantic water from the Norwegian Trench into Fensfjorden in Western Norway. Fensfjorden is used for routing pipelines to the oil terminal at Mongstad. The paper ...
ABSTRACT The fish cage system consists of netting, mooring ropes, a floating collar, floats, sinkers and anchors. Whole elements of the cage system were modeled on the mass-spring model. The modeling method was applied to the dynamic simulation of the actual fish cage system simultaneously influenced ...
ABSTRACT Westmar Consultants designed a mooring system for a large floating fish passage facility subject to 18.5 m water level fluctuations in the forebay of a deep-water reservoir in northwest Washington State, using OrcaFlex software developed for offshore oil rigs. The design included extensive ...
ABSTRACT The paper presents the design, installation and performance of the 1000 m3/day experimental barge mounted desalination plant. The plant was moored in 600 m water depth, to draw 10-12oC cold water from about 500 m water depth. A single point mooring system, the first of its kind in Asia for ...
ABSTRACT A fully nonlinear interaction between random waves and a freely floating body is investigated by a fully nonlinear numerical wave tank (NWT) based on boundary integral equation method (BIEM). In this model, a linear element method is adopted to solve the boundary integral equation, and subsequently ...
ABSTRACT In this paper, based on lumped mass method and linear wave theory, a numerical model of the grid mooring net cage under waves has been developed by setting up the motion equations of floating system, net system, mooring system and floaters. In order to validate the numerical model, physical ...
ABSTRACT The flotation ring, a vital component of the gravity-type fish cage in open ocean engineering, oscillates under the action of water waves. The wave forces on the element of the flotation ring can be represented by Morison formula. However, the computing results according to the common Morison ...
ABSTRACT Fishing net should have enough strength to withstand the loading due to current and stormy waves and avoid fishing escape. Differing from other structures made from rigid materials, the intrinsically flexible nets undergo large deformation under external and internal forces. In addition, the ...
ABSTRACT: Deep ocean water (DOW) is commonly referred to the water below 200 meters in the ocean that is typically cold, clean, stable, and rich in nutrients and minerals. Japan and the United States have been exploiting the DOW for applications in water, pharmaceutical, cosmetic, and fishery industries ...
The environmental impacts of wave energy projects are not yet fully understood. Only a few Environmental Impact Assessments (EIAs) have been carried out and only for small pilot plants. The assessment of such impacts is a highly complex process, not only because of the medium where these projects are ...
In this study, the experiments of a 1:30 scale model of a flexible circular net cage with the mooring system are conducted in the circulating flume. For geometry and motion measurements, a non-invasive stereo imaging method is employed, which use three CCD camera systems to take the 2D photos and then ...
In this paper, validation and verification of a 2-D Constrained Interpolation Profile (CIP) method is presented. Convergence and conservation of continuity and energy are checked. Benchmark tests are presented where analytical solutions, good results from other numerical methods and experiments are ...