鱼道进口布置方式对集诱鱼水流水力学特性的影响研究
发布时间：2018-11-28 09:42
【摘要】：鱼道进口的布置方式直接影响着集诱鱼水流的水力学特性,集诱鱼水流能否被鱼类识别和适宜鱼类洄游,决定着诱鱼效果,是整个鱼道工程成败的关键。本文提出两种鱼道进口布置方式,分别布置于闸墩旁和集诱鱼通道旁。为说明不同的鱼道进口布置方式对集诱鱼水流水力学特性的影响,采用标准k-ε3维紊流模型和VOF模型,对两种布置方式进行了3维数值模拟,并通过物理模型试验结果验证数值模拟的合理性。通过对比分析两种布置方式集诱鱼水流的流态、流速、流速适宜区宽度和紊动能表明:在集诱鱼通道布置方式下,集诱鱼水流流速更小,下游靠边最大流速减小1.0 m/s;流速适宜区(0.70~1.41 m/s)横向宽度更大,最大横向宽度增大3.0 m;水流紊动能更小,鱼道进口处最大紊动能减小0.60 m~2/s~2。集诱鱼通道布置方式下的水流具有更适宜鱼类洄游的水力学特性,能更有效地吸引并引导鱼类洄游上溯,找到鱼道进口,可为鱼道进口布置设计和研究提供参考。
[Abstract]:The arrangement of the entrance of the fish channel directly affects the hydraulic characteristics of the fish trap flow. Whether the fish trap flow can be recognized by fish and is suitable for fish migration determines the fish lure effect and is the key to the success or failure of the whole fish tunnel project. In this paper, two kinds of fish channel inlet arrangement are put forward, which are arranged by the pier and the fish trap respectively. In order to explain the influence of different entrance arrangement of fish channel on the hydrodynamic characteristics of fish trap flow, the standard k- 蔚 3D turbulent model and VOF model were used to simulate the two layout methods. The rationality of the numerical simulation is verified by the results of the physical model test. By comparing and analyzing the flow patterns of the two kinds of arrangement, the width of the suitable area and the turbulent energy show that the velocity of the water is smaller and the maximum velocity of the downstream reaches is decreased by 1.0 m / s under the arrangement of the fish-trap channel. In the suitable area of velocity (0.70 ~ 1.41 m / s), the transverse width is larger, the maximum transverse width is increased by 3.0 m, and the turbulent energy of the flow is smaller, and the maximum turbulent energy at the entrance of the fish channel is reduced by 0.60 m/ 2 / s ~ (-2). The water flow under the arrangement of fish trap channel is more suitable for fish migration, which can effectively attract and guide the fish migration upstream, find the entrance of the fish channel, and provide reference for the design and research of the fish channel inlet arrangement.
【作者单位】： 四川大学水力学与山区河流开发保护国家重点实验室;中国电建集团贵阳勘测设计研究院有限公司;
【基金】：国家重点研发计划资助项目(2016YFC0502207) 中国电建科研专项资助:水电工程过鱼设施关键技术研究
【分类号】：S956.3;TV135
本文编号：2362488
[Abstract]:The arrangement of the entrance of the fish channel directly affects the hydraulic characteristics of the fish trap flow. Whether the fish trap flow can be recognized by fish and is suitable for fish migration determines the fish lure effect and is the key to the success or failure of the whole fish tunnel project. In this paper, two kinds of fish channel inlet arrangement are put forward, which are arranged by the pier and the fish trap respectively. In order to explain the influence of different entrance arrangement of fish channel on the hydrodynamic characteristics of fish trap flow, the standard k- 蔚 3D turbulent model and VOF model were used to simulate the two layout methods. The rationality of the numerical simulation is verified by the results of the physical model test. By comparing and analyzing the flow patterns of the two kinds of arrangement, the width of the suitable area and the turbulent energy show that the velocity of the water is smaller and the maximum velocity of the downstream reaches is decreased by 1.0 m / s under the arrangement of the fish-trap channel. In the suitable area of velocity (0.70 ~ 1.41 m / s), the transverse width is larger, the maximum transverse width is increased by 3.0 m, and the turbulent energy of the flow is smaller, and the maximum turbulent energy at the entrance of the fish channel is reduced by 0.60 m/ 2 / s ~ (-2). The water flow under the arrangement of fish trap channel is more suitable for fish migration, which can effectively attract and guide the fish migration upstream, find the entrance of the fish channel, and provide reference for the design and research of the fish channel inlet arrangement.
【作者单位】： 四川大学水力学与山区河流开发保护国家重点实验室;中国电建集团贵阳勘测设计研究院有限公司;
【基金】：国家重点研发计划资助项目(2016YFC0502207) 中国电建科研专项资助:水电工程过鱼设施关键技术研究
【分类号】：S956.3;TV135
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1 曾秀娟;堤防决口封堵水力学数值模型研究[D];南昌大学;2015年
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