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人工鱼礁流场效应的模型实验
引用本文:刘洪生,马翔,章守宇,于红兵,黄华接.人工鱼礁流场效应的模型实验[J].水产学报,2009,33(2):229-236.
作者姓名:刘洪生  马翔  章守宇  于红兵  黄华接
作者单位:1. 上海海洋大学海洋科学学院,上海,201306
2. 中国科学院南海海洋研究所,广东广州,510300
基金项目:国家自然科学基金项目(30471332);十一五863项目(2006AA100303);上海市重点学科建设项目(T1101)
摘    要:摘要:本文针对正方体、金字塔及三棱柱人工鱼礁模型,选取三个不同工况6m/s、9m/s和12m/s,通过风洞实验研究不同类型人工鱼礁单体和不同组合正方体模型的流场效应。结果表明,模型迎流面和背流面分别产生上升流和背涡流,其规模随来流速度的增大而增大;相同来流速度下,同种模型空心模型的上升流和背涡流规模较实心模型小,空心模型背涡流回流速度随模型空隙率增大而减小;不同模型z方向的湍流强度均大于x方向。对于组合模型,随着来流速度的增大,中心点流速均逐渐增大;一定来流速度下,当模型间距在1~1.5倍模型尺度时,流场变化最大;且模型平行组合比垂直组合产生的流场效应更大。

关 键 词:人工鱼礁  流场  模型  上升流  背涡流
收稿时间:2007/11/7 0:00:00
修稿时间:2008/2/26 0:00:00

Research on model experiments of effects of artificial reefs on flow field
LIU Hongsheng,MA Xiang,ZHANG Shou-yu,YU Hongbin and HUANG Jiehua.Research on model experiments of effects of artificial reefs on flow field[J].Journal of Fisheries of China,2009,33(2):229-236.
Authors:LIU Hongsheng  MA Xiang  ZHANG Shou-yu  YU Hongbin and HUANG Jiehua
Institution:Shanghai Fisheries University,Shanghai Fisheries University,
Abstract:Abstract: In this paper, effects of artificial reefs (AR) and their compounds on flow field have been studied through wind tunnel experiments under conditions of 6m/s, 9m/s and 12m/s, on such single AR models with different shapes of cubic, pyramid and triangular prism. As conclusions, it was found that the ranges of upwelling and wake increased as the increase of water speed; the distribution and range of upwelling and wake of the hollow models were smaller than the solid models under the same water speed, the reflux velocity of hollow models decreased as the increase of porosity of AR models; the turbulence intensity in z direction was stronger than x direction of all models. For compound cubic models, the speed of the center points increased as the increase of water speed, the flow field has the biggest change when the distance between 1 to 1.5 times of model size at the same water speed; effects on flow field of the parallel compound models were bigger than the vertical compound models.
Keywords:artificial reefs  flow field  models  upwelling  wake
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