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使用双平行电导探针,通过测量气液两相瞬时液膜厚度,来反映气液两相流界面上的波动规律,对此测量系统进行了理论和实验研究。根据界面波的物理特性,设计出一种能够快速准确地测量液膜厚度的电导探针系统,并且提出了一种不受实验条件变化影响的探针标定方法。通过对水平管内空气-水气液两相流分层流界面厚度的测量,证明这种方法是切实可行的。
Using dual parallel conductivity probes, the instantaneous film thickness of gas-liquid two-phase was measured to reflect the fluctuation of the gas-liquid two-phase flow at the interface. Theoretical and experimental studies on the measurement system were carried out. According to the physical characteristics of the interface wave, a conductivity probe system that can measure the thickness of the liquid film quickly and accurately is designed, and a probe calibration method that is not affected by the change of experimental conditions is proposed. This method is proved to be feasible by measuring the thickness of stratified flow in air-water vapor-liquid two-phase flow in horizontal tube.