| 叶片形状对能量回收水力透平性能的影响 |
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| 引用本文： | 杨军虎,王晓晖.叶片形状对能量回收水力透平性能的影响[J].排灌机械,2011,29(4):287-291. |
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| 作者姓名： | 杨军虎 王晓晖 |
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| 作者单位： | 兰州理工大学能源与动力工程学院,甘肃兰州,730050 |
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| 基金项目： | “十一五”国家科技支撑计划项目(2008BAF34B10); 浙江省科技计划项目(2009C31145) |
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| 摘 要： | 以3台能量回收水力透平为研究对象,在透平轮基本几何参数（高压边直径、低压边直径、叶片进口宽度、叶片出口安放角及叶片数）和设计转速相同的情况下,根据不同的叶片进口角及包角设计了3种不同叶型,并应用计算流体动力学软件Fluent对其流场进行数值模拟.模拟结果表明：在最优工况下,叶型1透平轮流道内漩涡区域较小,相对速度和静压分布比叶型2和3透平轮均匀,叶型3的相对速度和静压分布最差,叶型1水力透平的最高效率比叶型2和3分别高约1%,2%;3种叶型水力透平的可回收水头和效率在流量小于设计流量时有H2〉H3〉H1,η1〉η2〉η3,大于设计流量时有H2〉H1〉H3,η3〉η2〉η1;在透平轮其他基本尺寸不变的情况下,存在最优的叶片进口角及包角组合;透平轮靠近叶片进口处压力面附近有轴向漩涡存在;相同流量下,叶型3透平轮可回收水头低;当流量大于设计流量时,包角越大,透平轮效率下降越明显.
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| 关 键 词： | 能量回收水力透平 透平轮 叶型 叶片进口角 包角 |
Effect of vane profile on hydraulic energy recovery turbines performance |
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| Yang Junhu,Wang Xiaohui.Effect of vane profile on hydraulic energy recovery turbines performance[J].Drainage and Irrigation Machinery,2011,29(4):287-291. |
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| Authors: | Yang Junhu Wang Xiaohui |
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| Institution: | Yang Junhu,Wang Xiaohui (School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050,China) |
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| Abstract: | Taking 3 hydraulic energy recovery turbines as objects,three types of vane profiles of turbine runners with different blade inlet angles and wrap angles were designed while other hydraulic geome-trical parameters and rotational speed fixed.Numerical simulations were carried out for turbines by computational fluid dynamics software Fluent.The simulation results show that the vortex in turbine runner vane profile 1 is weak,the relative velocity and pressure distribution of turbine runner vane profile 1 are mo... |
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| Keywords: | hydraulic energy recovery turbines turbine runners vane profile blade inlet angle wrap angle |
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