Droplet size in two-phase liquid dispersed pipeline flows

Few experimental data exists on drop size distribution during dispersed liquid-liquid pipeline flows. In the majority of cases dilute dispersions have been used and the results have mainly been compared with models for drop breakup. A review of this work shows that the Rosin-Rammler distribution represents satisfactorily the existing experimental data. However, the commonly used Hinze model (Hinze, 1955) often underpredicts the experimentally found maximum drop sizes. Later models, many of which are developments of the Hinze one, are also unable to predict the resulting maximum drop size for a wide range of experimental conditions. A more comprehensive database is needed for the further development and refinement of theoretical models.