2篇
您的检索式：作者名="Subong PARK"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dynamic Behavior and Deformation Analysis of the Fish Cage System Using Mass-Spring Model显示文摘Fish cage systems are influenced by various oceanic conditions, and the movements and deformation of the system by the external forces can affect the safety of the system itself, as well as the species of fish being cultivated. Structural durability of the system against environmental factors has been major concern for the marine aquaculture system. In this research, a mathematical model and a simulation method were presented for analyzing the performance of the large-scale fish cage system influenced by current and waves. The cage system consisted of netting, mooring ropes, floats, sinkers and floating collar. All the elements were modeled by use of the mass-spring model. The structures were divided into finite elements and mass points were placed at the mid-point of each element, and mass points were connected by springs without mass. Each mass point was applied to external and internal forces, and total force was calculated in every integration step. The computation method was applied to the dynamic simulation of the actual fish cage systems rigged with synthetic fiber and copper wire simultaneously influenced by current and waves. Here, we also tried to find a relevant ratio between buoyancy and sinking force of the fish cages. The simulation results provide improved understanding of the behavior of the structure and valuable information concerning optimum ratio of the buoyancy to sinking force according to current speeds. | Chun Woo LEE Jihoon LEE Subong PARK | 2015 | China Ocean Engineering2015，29，3： | 3 |
| 2 | Experimental Investigation and Numerical Analysis to Develop Low-Energy Large-Midwater Trawls显示文摘Fuel consumption in fisheries is a primary concern because of its effects on the environment and the costs incurred by fishermen. Many studies have been conducted to reduce the fuel consumption in fishing operations. Fuel consumption due to fishing gear during a fishing operation is generally related to the hydrodynamic resistance on the gear. This means that fuel consumption is proportional to the drag created by the towing speed. Based on numerical methods, this study suggests a new approach to reduce fuel consumption in fisheries. The results of the simulation are in good agreement with those of model experiments. The total as well as partial resistance forces on the gear are calculated by simulation. The simulation results suggest improved materials and gear structure for reducing the hydrodynamic forces on the gear while maintaining gear performance. The method for assessing the gear performance involves measuring the height and width of the net mouth. Furthermore, this study investigates the efficiency of a low-energy trawl from an economic point of view. The findings of this study will be useful in reducing greenhouse gas(GHG) emissions in fishing operations, and thereby contribute toward lowering fishing costs by saving fuel. | Jihoon LEE Taeho KIM Chun-Woo LEE Subong PARK | 2017 | China Ocean Engineering2017，31，6： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员