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The particle induced energy loss mechanism of Pelton turbine

机译：佩尔顿汽轮机的粒子诱导能量损失机制

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摘要

As hydraulic resource is widely developed in high mountainous area, design and optimization of Pelton turbine have attracted more and more academic attention especially in ultra-high hydraulic head condition. Computed Fluid Dynamics (CFD), as an effective tool to simulate flow in Pelton turbine has been proved to be practical and used widely. Mechanism of the energy loss produced by erosion is investigated through numerical simulation. Simulation is then confirmed by is then by comparing with the experimental results in clean water flow condition. Through CFD, under Eulerian-Eulerian methodology, threephase erosion flow is then calculated and complex flow in runner region are analysed. Comparing with clean water condition, the hydraulic efficiency of the turbine decreases in erosion condition, the particle mixed in the flow will disturb the water distribution on the working side of the bucket. Finally, the torque produced by water and particle are then distinguished quantitatively. As the erosion phenomenon exists which confirmed by the experiment in the literature, the particle disturbs the water distribution and then decreases the total torque and definitely decreases the hydraulic efficiency around 9%. It reveals that the energy loss caused by the erosion phenomenon plays an important role in power plant.(c) 2021 Elsevier Ltd. All rights reserved.
机译：随着液压资源在高山地区广泛开发，佩尔顿涡轮机的设计和优化尤其吸引了越来越多的学术关注，特别是超高液压头状况。已经证明了计算的流体动力学（CFD），作为模拟佩尔顿涡轮机流动的有效工具，已被证明是实用的并且广泛使用。通过数值模拟研究了侵蚀产生的能量损失的机制。然后通过与清洁水流条件的实验结果进行比较来确认模拟。通过CFD，在欧拉 - 欧拉米尔方法下，然后计算三相侵蚀流程，分析了转轮区域中的复杂流。比较清洁水条件，涡轮机的液压效率在侵蚀条件下减少，流动中混合的颗粒将干扰铲斗的工作侧的水分布。最后，然后定量地分辨水和颗粒产生的扭矩。随着由文献实验证实的侵蚀现象，粒子会使水分布扰动，然后降低总扭矩，绝对会降低9％左右的液压效率。它揭示了由侵蚀现象引起的能量损失在电厂发挥着重要作用。（c）2021 Elsevier Ltd.保留所有权利。

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  • 来源
    《Renewable energy》 |2021年第8期|237-248|共12页
  • 作者

    Han L.; Wang Y.; Zhang G. F.; Wei X. Z.;

  • 作者单位

    Harbin Inst Technol Sch Energy Sci & Engn Harbin 150001 Peoples R China;

    Harbin Inst Technol Sch Energy Sci & Engn Harbin 150001 Peoples R China;

    Harbin Inst Technol Sch Energy Sci & Engn Harbin 150001 Peoples R China;

    Harbin Inst Large Elect Machinery State Key Lab Hydropower Equipment Harbin 150040 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pelton turbine; Erosion; Sediment particles; Torque;

    机译：佩尔顿涡轮;侵蚀;沉积物颗粒;扭矩;

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