摘要
对国内外多种原型泵与模型泵之间的效率换算方法进行了理论分析。Moody等传统公式理论分析不充分、不完整,换算结果精度较差。JIS B 8327—2002推荐式以及本文推荐的新型效率换算公式表达较完善,但JIS B 8327—2002推荐式经验常数过多。本文推荐式是根据较严谨的数理关系推导得出的公式,既能适用于泵,也能适用于泵装置,且能定量表达多种因素对效率换算结果的影响,能够为大型泵与泵装置效率特性预测提供依据。
A comprehensive theoretical analysis was made on the conversion methods of efficiency characteristics between prototype and model pumps and pumping installations. Most efficiency conversion formulas existed did not analyze the theory sufficiently, and the conversion precision is not adequate. The formula recommended by JIS B 8327--2002 and the new formula recommended are the ones expressed more detailedly. But there are too many empirical constants in former one. The formulas of efficiency conversion recommended are theoretical ones, and are applicable not only to the pumps but also to the pump installations. Quantitative expression for the influence of variety of factors upon the results of efficiency conversion can also be achieved by the formula.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2009年第1期44-49,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(50279045)
江苏大学高级人才启动基金资助项目(08JDG038)
关键词
泵
泵装置
效率特性
特性预测
比尺效应
Pump, Pump installations, Efficiency characteristic, Performance prediction, Scale effect
