文章摘要
布设间距对多孔方型人工鱼礁流场效应影响的数值模拟研究
Numerical simulation study on influence of disposal space on effects of flow field around porous square artificial reefs
投稿时间:2019-03-14  修订日期:2019-05-13
DOI:
中文关键词: CFD  多孔方型人工鱼礁  布设间距  上升流;背涡流
英文关键词: CFD  Porous square artificial reef  Disposal space  Upwelling  Back eddy current
基金项目:国家自然科学基金青年科学基金项目(41606110)和浙江省大学生科技创新活动计划暨新苗人才计划项目(2018R411002)
作者单位E-mail
王佳浩 浙江海洋大学 wangjiahao2019@126.com 
刘莉莉 浙江海洋大学 liulili2001@163.com 
蔡新晨 浙江海洋大学  
陈佳滢 浙江海洋大学  
杨意馨 浙江海洋大学  
姜书侠 浙江海洋大学  
摘要点击次数: 41
全文下载次数: 0
中文摘要:
      本研究采用计算流体动力学(CFD)技术,研究了不同布设间距下多孔方型人工鱼礁周围水流运动规律,旨在为深入研究人工鱼礁的集鱼原理和海洋牧场建设中人工鱼礁的投放和布设提供更多参考。研究中采用了 4 种布设间距,它们分别为 0.5、1、1.5 和 2 倍鱼礁高度,基于计算机数值模拟技术,模拟了速度为0.8 m/s 的水流流经两个礁体的过程,分别观察鱼礁周围水流运动情况。研究结果显示:多孔方型人工鱼礁内部和周围存在缓流区、背涡流区、上升流区、死水区等有显著特征的区域;多孔方型人工鱼礁的上升流的最大速度与来流速度的比值约为0.95倍;多孔方型人工鱼礁周围上升流最大抬升高度与鱼礁高度之比均为 2.1左右;多孔方型人工鱼礁的结构在一定程度上为鱼礁周围的流态多样性提供了较有利的作用;多孔方型人工鱼礁的布设间距对两个鱼礁单体间的旋涡数量和旋涡方向有较大影响;多孔方型人工鱼礁的布设间距会对涡量大小和涡量分布范围产生影响。在一定范围内,布设间距越大,涡量越大,分布范围越广。但超过一定范围后,涡量不再增大,分布范围也不再扩大。
英文摘要:
      In this study, Computational Fluid Dynamics (CFD) technology was used to study the flow patterns around porous square artificial reefs with different disposal spaces, in order to provide more references for the further study of the fish harvesting principle of artificial reefs and the deployment and layout of the artificial reefs in the construction of marine pasture. Four kinds of disposal spaces were used in the study. They are 0.5, 1, 1.5 and 2 times the height of the reef respectively. Based on the computer numerical simulation technology, the process of water flowing pass the two reefs at a speed of 0.8 m/s was simulated, and the flow around the reef was observed respectively. The results show that there are obvious characteristics of slow flow area, back eddy current area, upwelling area and dead water area inside and around the porous square artificial reef; the ratio of the maximum upwelling velocity to the inflow velocity of the porous square artificial reef is about 0.95 times; the ratio of the maximum upwelling height to the reef height around the porous square artificial reef is about 2.1; To some extent, the structure of the artificial reef provides a favorable role for the diversity of flow patterns around the reef; the spacing of the porous square artificial reef has a great influence on the number and direction of vortices between the two reefs; and the spacing of the porous square artificial reef has an impact on the size and distribution of vortices. Within a certain range, the larger the spacing, the larger the vorticity and the wider the distribution range. But beyond a certain range, the vorticity does not increase and the distribution range does not expand.
相关附件:   附件1  万方20190314(12.20%)  修改说明word  修改稿不带修订格式  修改说明word  修改稿不带修订格式  论文图片(有更新的图片)  修改说明word  修改稿不带修订格式  论文图片(有更新的图片)  修改说明(三)  图片
View Fulltext   查看/发表评论  下载PDF阅读器
关闭