带有投料系统的浮式网箱的数值分析

Lin Li, Mathias Bruset, M. Ong, Xiaopeng Wu
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引用次数: 0

摘要

一个现代化的海洋养鱼场通常由一艘喂食驳船、几个鱼笼和喂食管组成。虽然文献中有许多实验和数值研究来研究波浪和水流条件下网箱的整体响应,但对包括网箱和喂食系统在内的耦合系统的研究非常有限。本文对浮动网箱与喂鱼系统的耦合系统进行了数值研究。目的是研究该耦合系统在不同环境条件和鱼场配置下的动态响应。首先在数值程序OrcaFlex中建立了一个数值模型,该模型包括一艘喂料驳船、一个带系泊系统的重力浮式鱼笼,以及在喂料驳船和鱼笼之间的一根喂料管。然后在参考站点对应的1年和50年的返回周期的环境条件下对该耦合系统进行时域模拟。比较了各种条件下鱼笼的变形、锚线和喂料管的张力。讨论了鱼网固度比和进料管长度对耦合系统响应的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Analysis of a Floating Fish Cage With Feeding Systems
A modern marine-based fish farm normally consists of a feeding barge, several fish cages, and feeding tubes. Although many studies, both experimental and numerical, are available in the literature to investigate the global responses of the fish cages under wave and current conditions, research on the coupled system including both the fish cage and the feeding system is very limited. This paper presents a numerical study on the coupled system with a floating fish cage and the feeding system. The purpose is to study the dynamic responses of the coupled system under different environmental conditions and configurations of the fish farm. A numerical model is firstly established in the numerical program OrcaFlex, comprising of a feeding barge, a gravity-based floating fish cage with mooring systems, and a feeding tube between the barge and the cage. Time-domain simulations of this coupled system are then performed under environmental conditions corresponding to 1-year and 50-year return periods for a reference site. The deformation of the fish cage, the tensions in the anchor lines and in the feeding tube are compared under various conditions. Sensitivity studies on the solidity ratio of the fish net as well as the lengths of the feeding tube are addressed, and their influences on the responses of the coupled system are also discussed.
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