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| 1 | 基于正交试验的轴流泵优化设计显示文摘对轴流泵进行正交试验法优化设计,为了研究叶轮、导叶、喇叭管对轴流泵性能的影响,设计了一个三因素二水平的正交方案。对每个方案进行试验测试,通过分析每个试验方案的性能曲线图,得到了对于各个性能的最优方案,对各个方案的试验数据进行极差分析,得到了轴流泵叶轮、导叶、喇叭管影响性能的主次顺序。通过分析与比较得出最优参数组合,即叶片角度ψ=0°的叶轮,加导流锥的导叶体,进口直径与叶轮直径比值为DL/D0=1.56、高度HL/D0=0.82的喇叭管。试验结果表明,最优组合方案在额定流量点扬程高于设计值6.16%,效率比规定值高出5.07%,轴流泵的高效区较宽,性能达到设计要求。 | 邢树兵 朱荣生 朱冬欣 龙云 贺博 曹梁 | 2015 | 中国农村水利水电2015，，1： | 5 |
| 2 | Anti-cavitation performance of a splitter-bladed inducer under different flow rates and different inlet pressures显示文摘The anti-cavitation performance of a high-speed centrifugal pump with a splitter-bladed inducer is investigated under different flow rates and different inlet pressures. Simulations and external characteristics experiments are carried out. Static pressure and the vapor volume fraction distributions on the inducer and the impeller of the pump under various operation conditions are obtained. The results show that the cavitation developments on the impeller and on the inducer with the flow rates are reverse, while the development of the inlet pressure on the inducer and the impeller is the same. Cavitation on the impeller increases with the increase of flow rates, and it extends to the near passages with rotating, while cavitation on the inducer is more complex than that on the impeller. Cavitation at the inlet of the inducer decreases with the increase of flow rates, while cavitation at the outlet of the inducer is opposite. The results also show that cavitation development on the impeller and on the inducer with the inlet pressure is the same. Cavitation both decreases with the increase of the inlet pressure at the same flow rate. Furthermore, asymmetric cavitation on the impeller and on the inducer is both observed. And the asymmetric degree of cavitation on the impeller is higher than that on the inducer. | GUO XiaoMei ZHU ZuChao CUI BaoLing HUANG Yong | 2015 | Science China(Technological Sciences)2015，58，12： | 4 |
| 3 | 间隙回流角度对全贯流泵水力性能的影响显示文摘为了研究不同间隙回流角度对全贯流泵水力性能的影响。采用CFX软件对全贯流泵装置进行三维数值模拟,分析不同间隙回流角度下的全贯流泵内部流态和性能。首先,针对初始方案,设计2种间隙回流角度并进行数值模拟计算,再分析全贯流泵的内特性和外特性,最后通过模型试验测试验证数值模拟的可靠性。结果表明:主流靠近叶轮进口轮缘处受到间隙回流的影响,轴向速度减小,径向速度增大;间隙回流角度顺着叶轮内流场的方向,间隙回流出口的流量对叶轮进口处的流场影响较小;小流量工况下,叶轮室内流场不稳定,同时间隙回流对叶轮进口轮缘处产生的影响较大,因此避免水泵在小流量工况下运行。但是回流角度的变化会影响全贯流泵的轴功率,增大了圆盘间的摩擦扭矩,进而增加了轴功率,导致效率降低。研究对全贯流泵的优化具有重要的理论意义和指导意义。 | 朱军 付玲玲 石丽建 尚晓君 焦海峰 | 2020 | 中国农村水利水电2020，，9： | 3 |
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