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   水轮机水动力 在 动力工程 分类中 的翻译结果: 查询用时:0.482秒
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水轮机水动力
相关语句
  “水轮机水动力”译为未确定词的双语例句
    On Study of the Calculation Methods for Hydrodynamic Performance of the Voith-Schneider and Kobold Rotor
    摆线式和蹼板式水轮机水动力性能计算方法研究
短句来源
    On Study of an Optimal Method for Hydrodynamic Performance of a New Type of Vertical-axis Turbine
    一种新型变攻角直叶水轮机水动力性能优化研究
短句来源
    Research on the Hydrodynamic Characters of Unsteady Airfoils and Straight-bladed Turbines
    机翼非定常特性与直叶水轮机水动力性能分析
短句来源
    Much attention is focused on the comparison and studying of the reliability of the different methods when applied to this kind of turbine and focused on the probing into the hydrodynamic mechanism of the new optimized turbine. All of these is the important base of the selecting of turbines, the designing of hydrodynamics performance, and the general designing of marine currents power plant.
    目的是比较和研究各种计算方法应用于该种水轮机的可靠性、并探索新型水轮机水动力机理,为潮流水轮机的选型、水动力性能设计以及潮流电站的总体设计奠定基础。
短句来源
    At first an analysis of the basic principles of the vertical-axis variable-pitch turbine is given including two methods to calculate the induced velocity.
    首先分析了竖轴可调角直叶水轮机水动力性能计算的基本公式,介绍了诱导速度的两类计算方法。
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An optimization method and mathematic model based on turbine hydrodynamics were presented to enhance the power coefficient of the vertical_axis straight_blade turbine for tidal streams energy conversion. The optimization parameter was selected as the changing rule of deflection angle versus azimuth angle and the optimization objective as the turbine power coefficient. The turbine hydrodynamic performance was solved by the multi_streamtube model based on the momentum theory. Calculating example was given with...

An optimization method and mathematic model based on turbine hydrodynamics were presented to enhance the power coefficient of the vertical_axis straight_blade turbine for tidal streams energy conversion. The optimization parameter was selected as the changing rule of deflection angle versus azimuth angle and the optimization objective as the turbine power coefficient. The turbine hydrodynamic performance was solved by the multi_streamtube model based on the momentum theory. Calculating example was given with the prototype of the vertical_axis cycloidal turbine. Such optimal results as the turbine power coefficient and the relation between attack angle and blade motion were given with particular analysis to explain the improved performance. The results show that the turbine power coefficient is enhanced by increasing the blade hydrodynamic angle of attack together with increased force acted on the blade and moment acted on the turbine axis.

水轮机水动力学原理出发,建立了提高竖轴变攻角潮流发电水轮机能量利用率的优化方法和数学模型.该模型以叶片偏角随位置角的变化规律为优化参数,以水轮机工作速比范围内的能量利用率系数为优化目标,采用基于动量定理的多流管模型来求解流体动力.选取竖轴直叶摆线式水轮机为优化原型进行了优化计算,给出了优化后水轮机的能量利用率以及攻角随位置角的变化规律.通过与不同偏心率的摆线式水轮机的能量利用率及攻角随位置角变化规律的对比,分析了优化后水轮机水动力性能改变的规律及原因.结果表明,在优化速比范围内,水轮机叶片不同位置角处的水动力攻角都有所增大,作用于叶片上的力以及叶片受力对水轮机中心的力矩也相应增大,从而提高了水轮机的能量利用率.

This paper describes and compares 4 streamtube models (single-disk single-streamtube, double-disk single-streamtube, single-disk multi-streamtube and double-disk multi-streamtube models) based on the momentum theory for the hydrodynamic performance prediction of the vertical-axis variable-pitch turbine that may be employed to tap tidal stream energy resources, especially for the prediction of the overall turbine power coefficient. All of these are for the designing of turbines used in tidal stream power plants....

This paper describes and compares 4 streamtube models (single-disk single-streamtube, double-disk single-streamtube, single-disk multi-streamtube and double-disk multi-streamtube models) based on the momentum theory for the hydrodynamic performance prediction of the vertical-axis variable-pitch turbine that may be employed to tap tidal stream energy resources, especially for the prediction of the overall turbine power coefficient. All of these are for the designing of turbines used in tidal stream power plants.

以潮流发电水轮机的设计为研究背景,分析和总结了基于动量定理方法的四种流管模型(单盘面-单流管模型、双盘面-单流管模型、单盘面-多流管模型和双盘面-多流管模型)在竖轴变攻角水轮机的水动力性能计算中的应用,特别是能量利用率预报方面的应用。说明基于动量定理的模型在求竖轴变攻角潮流发电水轮机的水动力性能方面,能够预报一些定性特性和总体趋势,为水轮机的设计和计算提供一种初步方法。

An experimental investigation was done on the newly developed hydro turbine,the paddle turbine.After designing and making a test model and related experimental devices,data was gathered on the hydrodynamic performance of the paddle turbine and factors such as solidity, tip speed ratio(TSR), blade number, Reynolds number on power efficiency coefficient.Many advantages of paddle turbine were confirmed,including simple mechanism, minimization of capital costs, maximum power production, easy accessibility and a...

An experimental investigation was done on the newly developed hydro turbine,the paddle turbine.After designing and making a test model and related experimental devices,data was gathered on the hydrodynamic performance of the paddle turbine and factors such as solidity, tip speed ratio(TSR), blade number, Reynolds number on power efficiency coefficient.Many advantages of paddle turbine were confirmed,including simple mechanism, minimization of capital costs, maximum power production, easy accessibility and a capacity for self-starting.This initial study of the paddle turbine is useful for future design and theoretical and experimental investigation.

阐述了一种全新水流发电装置———蹼板式水轮机的首次实验研究的全过程.介绍了该类型水轮机的试验模型和试验装置的设计加工,分析整理出了我国第一份蹼板式水轮机的水动力性能资料,探讨了密实度、进速系数、叶数、雷诺数等主要参数对能量利用率系数的影响并分析了原因.该项研究结果表明,该型水轮机具备机构简单、造价低廉、能量利用效率高、易操纵性以及自启性良好等诸多优点,从而使它具有广泛的市场开发前景.

 
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