Look-Up Table for Two-Phase Frictional Pressure Drop Multiplier.

摘要

Accurate prediction of two-phase friction pressure drop requires knowledge of the Two-Phase Friction Pressure Drop Multiplier, phi2 LO, used for calculating two-phase friction pressure drop. Many Correlations and models are previously made to predict the two-phase friction multiplier, but the problem that there is inconsistency in prediction as the models perform adequate for some regions and non-adequate in others. Therefore, it is needed to construct a single component two-phase look-up-table, to predict the two-phase frictional pressure drop multiplier. A skeleton table for F2LO (DR, Re, x) was constructed using leading correlations. The table then was updated with available experimental data which are enhanced to reduce the error in correlations predictions. Three dimensional smoothing was applied on the updated table. Detailed error assessment of the table was presented with comparing its predictions against experimental data as well as leading models and correlations. As a result, constructing such a table guarantees covering wide ranges of flow conditions with error 7% lower than the best prediction among existing models and correlations.