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中文摘要：
单体及双体人工鱼礁流场效应的研究,是鱼礁结构设计和投放布局的重要理论基础。将PIV（粒子图像测速）二维流场测试技术应用到人工鱼礁领域,对单体和双体星型人工鱼礁在三种流速下所产生的流场效应进行了测试。通过试验获得了鱼礁周围的流场规模和主要特征流（上升流和背涡流）的性质。结果表明,单体鱼礁所产生的上升流和背涡流的规模和强度与其摆放高度和迎流面积有关;组合鱼礁周围流场分布与两鱼礁的排列方式（横向与纵向）和间距有关,两鱼礁横向排列比单体鱼礁产生的流场效应强,纵向排列两鱼礁之间出现漩涡结构。
英文摘要：
Studying the flow field of single and two combined artificial reefs can give important theoretical basis for artificial reefs design and layout.The PIV techniques for two-dimensional flow field measurements were applied to the flow field of artificial reefs.The flow field of single star artificial reef and combined star artificial reef were studied at three different velocities.The results show that the scale and intensity of upwelling and rear eddy are related to the height and area of single reef;the arrangement and spacing for two combined artificial reef have great influence on the flow field around the reefs;the effects on the flow field caused by a couple of reefs in transverse arrangement were bigger than that by monomer reef and vortices appear between two models in tandem arrangement.
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