气液两相流体通过孔板诸流量模型的比较和评价

分析和验证了一些具有代表性的两相孔板流动模型,提出了修正均相流动模型。用平方和加权法对它们作了总体评价,并指出各模型的精度高低和应用性能优劣。     

INVESTIGATION ON A FLOWRATE MEASURING SYSTEM USING LIGHT FIBRE FLUOROMETERS

In this paper a flowrate measurement method in pipe directly using light fibres with some fluorescent tracer is proposed. This method will work better than traditional tracers measurement such as using radioactive or salt tracers. It is shown that the flowrate signals are sensitive and intensive also if the injected tracer volume is very small and if the tracer concentration is very lew (<10ppm) ico. It is also show that the calibration factor K is constant within a certain flowrate range. An estimation of uncertainty of flowrate measurement is given, which shows that the measuring accuracy can be within ±2%.