Evaluation of Wave Frequency Correlations in Horizontal annular Flow

Abstract

The evaluation of the existing wave frequency correlations was discussed in this paper. Fourcorrelations were tested using the experimental data of the air-water horizontal annular flow in 16 mmand 26 mm inner diameter pipes. Different liquid viscosity and surface tension were used in theexperiment. To obtain annular flow pattern, the superficial gas and liquid velocity were set at 12 to 40m/s and 0.05 to 0.2 m/s, respectively. The wave frequency increases with the increasing of gas andliquid superficial velocity. However, the effect of superficial liquid velocity is less significant than thatof superficial gas velocity. The examination of the existing correlations for the wave frequency showsthat the accuracy of the correlation is generally only valid for certain cases of experiment andproducing large error for the other cases