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首页> 外文会议>HydroVision 2008 conference technical papers >The Sluice-Type Fish Pass - Example of a Combined Design Process
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The Sluice-Type Fish Pass - Example of a Combined Design Process

机译：水闸型鱼道-联合设计过程的示例

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The construction of various hydroelectric power plants in rivers is accompanied by inevitablernbarriers for the normal fish movement. Upon the construction, a marked decrease of the fishrnpopulation is occurring. In the past century, many fish passes were installed to re-establish thernpassability of rivers. But the functional capability of many fish passes is very poor. The analysisrnof possible reasons indicates insufficient collaboration of biologists and engineers and thernreciprocal poor understanding.rnMost of the passes are designed on the basis of technical rules which consist in a onedimensionalrncalculation along the fish pass. During the past decade, the numerical methodsrnpermitted the three-dimensional analysis of the flow regime within the passes. It becamernobvious that a three-dimensional design and a thorough understanding of fish physiology andrnsensual capabilities are essential for a good fish pass design.rnIn the present paper, a new type of fish pass is presented. The use of alternating vertical sluicerngates and impingement walls avoids the entrainment of air into the water. The result consists inrnreduced disturbances in the fish pass due to air bubbles and in a lower noise level in the waterrnand in the air along the fish pass.rnIn a first step, experimental data with fish is presented. The behaviour of three species of fishrnwas studied in order to demonstrate the acceptance of the fish pass. A series of experimentalrndata is presented for the discussion of the correlation between flow and geometry of such a fishrnpass.rnThe use of parameter studies with CFD simulations led to design rules of a sluice gate type fishrnpass. By means of another numerical method, the so-called Large Eddy Simulation, a morerndetailed analysis of the instantaneous flow regime was possible. The distribution of velocity andrnturbulence fields, as well as coherent turbulent structures within the pools allowed a betterrnunderstanding of fish behaviour. The use of advanced calculation methods provides for betterrncommunication and understanding between biologists and engineers. In an iteration process,rnboth disciplines can contribute to the design process.rnAdditionally to the basic mechanism, a geometric variation is presented. By means of arngeometric expansion, the passage of the fish pass becomes possible for small organisms likernmacrozoobenthos and fish which live near the riverbed as well as small fish. Thus, thernselectivity of the fish pass is significantly reduced.
机译：河流中各种水力发电厂的建设都伴随着正常鱼类运动的必然障碍。在建造时，正在发生鱼类种群的显着减少。在上个世纪，安装了许多鱼道以恢复河流的通行能力。但是许多鱼道的功能能力很差。分析的可能原因表明，生物学家和工程师之间的协作不足，相互了解不足。在大多数通行证的设计都是基于技术规则，其中包括沿鱼通行证的一维计算。在过去的十年中，数值方法允许对流道内的流态进行三维分析。显而易见的是，三维设计以及对鱼类生理学和感官能力的透彻了解对于良好的鱼design设计至关重要。在本文中，提出了一种新型的鱼.。使用交替的垂直闸门和冲击壁可避免空气夹带到水中。结果包括减少了由于气泡引起的鱼道干扰，以及沿着鱼道的水域和空气中较低的噪声级。第一步，提供了鱼的实验数据。研究了三种鱼类的行为，以证明接受鱼道。提出了一系列实验数据来讨论这种鱼道的流量与几何形状之间的相关性。使用参数研究与CFD仿真得出闸门式鱼道的设计规则。通过另一种数值方法，即所谓的大涡模拟，可以对瞬时流态进行更详细的分析。池内速度场和湍流场的分布以及相干的湍流结构使人们对鱼类的行为有了更好的了解。先进的计算方法的使用为生物学家和工程师之间更好的沟通和理解提供了条件。在迭代过程中，两个学科都可以参与设计过程。除了基本机制之外，还提出了几何变化。通过测角学的扩展，鱼类通过可能成为小型生物，例如大河豚和生活在河床附近的鱼类以及小型鱼类。因此，鱼道的选择性大大降低了。

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