A new model for wet gas flow measurement with V-cone meter

The two-phase flow coefficient of a V-cone meter was proposed to correct the "over-reading" produced by measuring the wet gas using the V-cone meter. The experiment was conducted with the V-cone meter with a diameter ratio of 0.75 for air and water. The test pressure ranged from 0.10 MPa to 0.22 MPa, and the gas and liquid mass flow rates were from 100 m³·h^-1 to 300 m³·h^-1 and from 0 to 0.08 m³·h^-1, respectively. The effects of the Lockhart-Martinelli parameter, the operating pressure and the gas densiometric Froude number on the two-phase flow coefficient were investigated. The results show that the two-phase flow coefficient increased linearly with the Lockhart-Martinelli parameter, and the slope of the two-phase flow coefficient vs. the Lockhart-Martinelli parameter was affected by the gas densiometric Froude number and the pressure. The correlation between the two-phase flow coefficient and the Lockhart-Martinelli parameter, the gas densiometric Froude number and the pressure was obtained. On the basis of the two-phase flow coefficient, the wet gas model was developed. The relative error of the gas mass flow rate predicted by the model is within ±5.0% at the 95% confidence level.