摘要
以定常来流海域为例,利用数值实验方法,定量探讨了具有自由水面的海域中人工鱼礁单体对流场的影响。考虑嵊泗鱼礁投放区的流速、水深的调查结果,来流速度Uin、水深H分别取为0.7 m/s、20 m。在鱼礁为实心方体的情况下,在渔礁迎流面产生上升流背流面产生涡流;上升流域的规模、强度随着礁高增大而增大,而上升流面积的平均产量与边际产量随礁高先增后减,在礁高水深比r=0.1时上升流效应最佳;背涡流域的规模也随着礁高增大而增大,其面积的平均产量随礁高先增后减,在r=0.1时达到极值。
In this paper, the effects of artificial reef on the vertical 2-dimensional steady flow fields with free surface were quantitatively discussed with numerical methods. In view of the current velocity and the water depth investigated in the artificial reef area at Shengsi, the value Uin, and the depth H could be taken as 0.7 m/s and 20 m respectively. The influencing range and the strength of the upwelling field intensify with the increase of the reef height, and the range of the eddy behind reef has the similar features to the range of the upwelling strength. The average production and marginal production of upwelling field and eddy field reaches at the appropriate 0.1 ratio of the reef height to the water depth, after this, weakening with the increase of reef height.
出处
《上海水产大学学报》
CSCD
北大核心
2005年第4期406-412,共7页
Journal of Shanghai Fisheries University
基金
国家自然科学基金(30471332)
上海市重点学科建设项目(T1101)
上海市教委重点基金项目(05ZZ51)
关键词
人工鱼礁
数值模型
二维
上升流
artificial reef
numerical experiment
two-dimension
upwelling
