| PIV在半开式离心泵内部流场测量中的应用 |
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| 引用本文： | 孙荪,刘超,汤方平,成立,李大亮.PIV在半开式离心泵内部流场测量中的应用[J].中国农村水利水电,2004(1):65-67. |
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| 作者姓名： | 孙荪 刘超 汤方平 成立 李大亮 |
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| 作者单位： | 1. 江苏省淮安市水利局,江苏,淮安,223005
2. 扬州大学水利与建筑工程学院,江苏,扬州,225009 |
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| 摘 要： | 采用PIV对半开式离心泵叶轮内旋转流场和叶轮与蜗壳间隙的流速场，选择3个不同方位的窗口进行了测量。所测量的3种不同运行工况，其流量分别为额定流量的1．4、1．0和0．6倍。不同窗口测得的两叶片间流道的流速分布表明：即使在设计工况下，整个叶轮各叶片间的流速分布也不是对称的；在非设计工况尤其明显，3个叶槽之间的流场分布更加不同；特别是在小流量工况时，始终存在一个低速区，位于叶槽进出口之间，靠近压力侧。
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| 关 键 词： | 半开式离心泵 PIV 流场测量 叶轮 蜗壳 叶槽 |
| 文章编号： | 1007-2284(2004)01-0065-03 |
| 修稿时间： | 2003年8月10日 |
Application of PIV in Internal Flow Field Measuring of Semi-Shrouded Centrifugal Pump |
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| SUN Sun,LIU Chao,TANG Fang-ping,CHENG Li,LI Da-liang.Application of PIV in Internal Flow Field Measuring of Semi-Shrouded Centrifugal Pump[J].China Rural Water and Hydropower,2004(1):65-67. |
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| Authors: | SUN Sun LIU Chao TANG Fang-ping CHENG Li LI Da-liang |
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| Abstract: | The internal circumfluence flow field of semi-shrouded centrifugal impeller and its velocity field between impeller and volute are measured by PVI at three windows of different directions. And three operation points of the pump are measured at the ratios of flow rate of 1.4, 1.0, and 0.6, respectively. The results of velocity distribution in passages between two impellers measured at different windows show that the velocity distributions are asymmetric even under the design operation point; the flow field distributions among three blades are even more different under other operation points. Especially at small-discharge operation points, a low velocity zone always exists between the inlet and outlet, and near the pressure-side of blade. |
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| Keywords: | semi-shrouded centrifugal pump impeller PIV measuring flow field |
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