Abstract
In order to investigate the characteristics of electromagnetic flowmeter in two-phase flow, an AC electromagnetic tlowmeter was designed and manufactured. In various tlow conditions, the signals and noises from the tlowmeter were obtained and analyzed by comparison with the observed tlow patterns with a high speed CCO camera. The experiment with the void simulators in which rod shaped non-conducting materialbr/ was used was carried out to investigate the efTect of the bubble position and the void fraction on the tlowmeter. Based on the results from the void simulator, two-phase tlow experiments encompassed from bubbly to slug tlow regime were conducted. The simple relation △UTP= △UTP(1 -a) was verified with measurements of the potential difference and the void fraction. Due to the lack of homogeneity in a real two-phase tlow, the discrepancy between the relation and the present measurement was sl ightly increased with void fraction and also liquid volumetric flux )
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