摘要
采用PIV技术对一双叶片离心泵叶轮出口处的滑移速度进行了实验研究,得到了7个工况、6个相位下的滑移系数,发现随着流量的增大6个相位下的平均滑移系数呈递减的趋势变化。采用斯托道拉公式、威斯奈尔公式、斯基克钦公式分别计算了双叶片离心泵的滑移系数,并与各个工况下的实验值进行了比较。根据实验值对计算误差最小的威斯奈尔公式进行了修正,并重新设计一个双叶片叶轮进行了验证。研究结果表明7个工况下修正后的滑移系数计算误差均在3.5%以内,其最大误差为3.23%。
Slip velocity of impeller outlet for a double-blade centrifugal pump was studied with PIV technology and slip factors of six blade phases at the seven conditions were obtained. It is found that average slip factor at the six blade phases gradually decreased with the increase of flow rate. Flip factors of the double-blade centrifugal pump were calculated with Stodola formula, Weisner formula and Stechkin formula and all the results were compared with experimental values at the seven conditions. Weisner formula, whose calculation errors were the smallest, was corrected on the basis of experimental values. And a double-blade impeller was redesigned to verify correct formula. The results showed that the calculation errors of corrected slip factors at the seven conditions were less than 3.5% and the maximum error was 3.23%.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2013年第7期61-66,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(51079062
51179075
51109095
51209105)
江苏省科技支撑(工业)项目(BE2012129)
江苏大学高级专业人才科研启动基金资助项目(12JDG045)
关键词
双叶片离心泵
滑移系数
离子图像测速
修正系数
Double-blade centrifugal pump Slip factor Particle image velocimetry Correctioncoefficient
