摘要
介绍了用多台FJPE型测管对由一个弯头形成的非充分发展管流的试验研究过程、部分数据处理结果、管道横断面流速分布情况。初步结论表明,由各直径处流速分布图,总能找到一个直径,其两半径的的流速分布具有近似对称性,且半径为r处的流速值与同一半径的八个测量点的流速平均值相近,为优化测量点数及测量点位置提供了依据。
The data processing and the flow velocity profiles at the cross section of the pipe are described. The initial results indicate that a diameter must be found out through the velocity profiles on all the diameters, of which the two radius have similarly symmetrical velocity profiles. Besides, the velocity value on the point whose radius is similar to the average value of the velocity values on the eight measured points for the same radius is got.
出处
《计量学报》
EI
CSCD
北大核心
2008年第5期461-464,共4页
Acta Metrologica Sinica
关键词
计量学
大口径流量测量
FJPE型测管
非充分发展管流
Metrology
Large-bore flow-measurement
FJPE type gauging pipe
Non-fully developed pipe flow
