Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
AIR-WATER SLUG FLOW PRESSURE DROP ANALYSIS IN CORRUGATED PIPES
Submission Author:
Ana Luiza Beltrão Santana , PR
Co-Authors:
Ana Luiza Beltrão Santana, Hedilberto Barros, Moisés Marcelino Neto, Rigoberto Morales
Presenter: Ana Luiza Beltrão Santana
doi://10.26678/ABCM.COBEM2019.COB2019-1295
Abstract
Corrugated pipes have periodic cavities on inner wall that provide dynamic changes in the flow. Oil and gas offshore production lines consist of corrugated pipes and the most observed flow pattern in these lines is slug flow. The pressure drop is an important project requirement for facilities design, safe operations and must be predicted quickly and reliably. Some studies proposed correlations to predict the pressure drop for slug flow in smooth pipes. However, limited research has evaluated the slug flow pressure drop in corrugated pipes. This work carried out an experimental analysis of horizontal air-water slug flow pressure drop in three different inner diameters (26, 40 and 50 mm ID) with three distinct cavities width (1,2, 1,6 and 2 mm). The effects of inner diameter and cavity width on slug flow pressure drop were analyzed. The results demonstrated that increasing the cavities width in corrugated pipe increases the pressure drop. The experimental data were fitted and a pressure drop multiplier correlation was proposed. Comparison between predictions and experimental data showed 10% accuracy.
Keywords
two-phase pressure drop, corrugated pipes, Slug Flow, cavities width, pressure drop multiplier of Lockhart-Martinelli
