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中文摘要：
采用无干扰的粒子图像测速技术（PIV）,针对中空型正方体人工鱼礁,选取3个不同的来流速度6.7 cm/s、11.0 cm/s和18.0 cm/s,研究了该模型单体（90°和45°）和组合（平行和垂直）工况时的流场效应。结果显示,单体90°迎流时上升流的规模和强度大于45°迎流,但产生的缓流区和背涡流的规模远小于45°工况。横向组合中单个鱼礁模型产生的流场效应较强于单体工况。纵向组合中,第一个迎流鱼礁在不同间距时内部流速分布和单体时较为相似,间距为1.0L时流速大小与单体最为接近。第二个迎流鱼礁内部基本上未出现回流区域,水平流速较单体时明显减小,但随着间距的增加流速值不断增大。
英文摘要：
Effects of hollow cube artificial reefs（90° and 45°） and their compounds（parallel and vertical） on flow field have been studied by use of particle image velocimetry techniques for two-dimensional flow field testing under conditions of 6.7 cm/s,11.0 cm/s and 18.0 cm/s.The results show that the scale and intensity of upwelling field of artificial reef at the angle of 90° are larger than those at the angle of 45°;however the scale and intensity of back flow field are smaller.The effects of flow field caused by a single artificial reef are weaker than the one in parallel combination.The flow velocity distributions within the first artificial reef of the vertical combination with different spacing are similar to a single reef.The values of horizontal flow velocities within the second artificial reef are obviously smaller than a single artificial reef and increase with the vertical spacing.
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