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Studies of a Method to Prevent Draft Tube Surge and the Analysis of Wicket Gate Flow and Forces.

机译：防止尾水管涌浪的方法研究及闸门流动和力的分析。

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An air flow facility was used to simulate the flow through a set of wicket gates and the draft tube typical of a hydroelectric pump-turbine. A method of preventing draft tube surge was studied, which consists of injecting some high energy fluid from the spiral casing into the draft tube counter to the direction of the swirl. The results of these tests provide design criteria for selecting injection nozzle configuration and estimating the required injection flow for a turbine of given performance characteristics. A potential solution of the flow through a two-dimensional radial cascade of airfoils is also presented. The predicted flow field characteristics are compared with experimental measurements, and the results indicate very good agreement between the measured and predicted values. (Author)

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作者
gearhart, w. s. yocum, a. m.;
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年度 1978
页码 1-74
总页数 74
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Turbines; Exhaust nozzles; Surges; Water flow; Cascades(Fluid Dynamics); Flow fields; Injection; Potential flow; Control; Water hammer; Hydroelectricity;

机译：涡轮机;排气喷嘴;浪涌;水流;叶栅（流体动力学）;流场;注入;势流;控制;水锤;水力发电;

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2. Draft tube discharge fluctuation during self-sustained pressure surge: Fluorescent particle image velocimetry in two-phase flow [J] . Müller A., Dreyer M., Andreini N., Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2013,第4期

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3. Assessment Study of K-? Turbulence Models and Near-Wall Modeling for Steady State Swirling Flow Analysis in Draft Tube Using Fluent [J] . Sergio Galván, Marcelo Reggio, Francois Guibault Engineering Applications of Computational Fluid Mechanics . 2011,第4期

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4. One-Dimensional Analysis of Full Load Draft Tube Surge [C] . Yoshinobu Tsujimoto, Koichi Yonezawa, Changkun Chen International symposium on fluid machinery and fluid engineering . 2008

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5. Fluid-elastic instability of a tube bundle in two-phase cross-flow using measured quasi-static forces. [D] . Shahriary, Soroush. 2008

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6. MRD detection in multiple myeloma: comparison between MSKCC 10-color single-tube and EuroFlow 8-color 2-tube methods [O] . Mikhail Roshal, Juan A. Flores-Montero, Qi Gao, 2017

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7. Study on Swirl Flow and Surge in an Elbow Type Draft Tube [O] . Michihiro NISHI, Takashi KUBOTA, Shigenori MATSUNAGA, 1982

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Studies of a Method to Prevent Draft Tube Surge and the Analysis of Wicket Gate Flow and Forces.

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