人工鱼礁流场效应的PIV试验研究

【作者】 付东伟；

【导师】 栾曙光；

【作者基本信息】 大连海洋大学 ， 港口、海岸及近海工程， 2013， 硕士

【摘要】 采用PIV（粒子图像测速）二维测试技术和水槽模拟试验研究人工鱼礁流场效应，对单体开口比分别为0、0.04、0.16、0.25人工鱼礁模型在来流流速分别为180mm/s、112mm/s、67mm/s时产生的流场效应和纵向双体人工鱼礁随着礁体间距为50mm、100mm、150mm、200mm时产生的流场效应，以及多块人工鱼礁不同组合方式产生的流场效应进行分析研究。结果表明：单体人工鱼礁流场效应中，开口比是影响平均上升流流速和背涡流流域涡流面积的主要因素，来流流速影响程度次之；纵向双体人工鱼礁流场效应中，开口比也是影响平均上升流流速和背涡流流域涡流面积的主要因素，礁体间距影响程度次之；多块人工鱼礁组合方式流场效应中，迎流面为斜面和背流面为直立面时产生的流场效应最佳，即群礁组合为直角梯形时效果较好。更多还原

【Abstract】 The flowing field of artificial reefs was studied by PIV (particle imagevelocimetry) two-dimensional flow field measurements and water channel physicalinvestigation. It was studied of the flow field of single cube artificial reefs which theopening ratio of the monomer were0,0.04,0.16,0.25at three different incomingvelocities of180mm/s,112mm/s,67mm/s, longitudinal catamaran artificial reefs atfour different reef spacing of50mm,100mm,150mm and200mm and combinedartificial reefs. The results showed that: in the flowing field of single cube artificialreefs, the opening ratio of the artificial reefs was the major factor influencingupwelling average velocity and area of reverse vortex, and the effect of the incomingflowing velocities was found to be less significant; in the flowing field of longitudinalcatamaran artificial reefs, the opening ratio of the artificial reefs also was the majorfactor influencing upwelling average velocity and area of reverse vortex, and theeffect of the reef spacing was found to be less significant; in the flowing field ofcombined artificial reefs, it was preferably influence of the flowing field that incidentflow surface was slop and reverse vortex surface was upright, in other words, theartificial reefs combination into rectangular trapezoidal was more better.更多还原