The problem of suspension treatment of subsea oil-gas pipelines has been highly concerned by engineering construction units and researchers. The current research indicates that the bionic sea grass can effectively reduce the flow rate, promote sediment deposition, and control the development of the pipeline suspension area. The velocity distribution of open channel flow with bionic grass is very complex. The height and laying space of bionic grass will affect the flow velocity distribution. At present, the flow velocity in open channels with bionic grass is mainly studied by measuring the velocity variation at the front, middle, and back of bionic grass. Few effective measurements are made for the full velocity field. The velocity field distribution of bionic aquatic grass along the vertical plane is measured by using standard particle image velocimetry (PIV). The effects of height and laying space of bionic grass on probability density distribution, spatial correlation of pulsating velocity, turbulence intensity, Reynolds stress and turbulent kinetic energy in the open channel after the protection section of bionic grass are further analyzed.

中文翻译：

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仿生草明渠流速结构及湍流特性影响因素的试验研究

海底油气管道的悬浮处理问题一直受到工程建设单位和科研人员的高度关注。目前的研究表明，仿生海草可以有效降低流速，促进泥沙沉积，控制管道悬空区的发展。仿生草明渠流的速度分布非常复杂。仿生草的高度和铺设空间会影响流速分布。目前，对仿生草明渠流速的研究主要是通过测量仿生草前、中、后的流速变化来研究。几乎没有对全速度场进行有效的测量。仿生水草沿垂直平面的速度场分布是通过使用标准粒子图像测速法（PIV）来测量的。进一步分析了仿生草的高度和铺设空间对仿生草保护段后明渠内概率密度分布、脉动速度空间相关性、湍流强度、雷诺应力和湍流动能的影响。