Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL ANALYSIS OF HORIZONTAL AIR-WATER SLUG FLOW PRESSURE DROP IN CORRUGATED PIPES
Submission Author:
Ana Luiza Beltrão Santana , PR
Co-Authors:
Ana Luiza Beltrão Santana, Moisés Marcelino Neto, Rigoberto Morales
Presenter: Ana Luiza Beltrão Santana
doi://10.26678/ABCM.ENCIT2018.CIT18-0532
Abstract
Oil and gas companies use corrugated pipes in offshore production riser lines where the most common flow patterns is slug flow. The cavities of the corrugated pipes are responsible for piping flexibility and can lead to dynamic changes in the flow, for example pressure drop variation. Pressure drop estimation is an essential project requirement for facilities design and this estimation must be quickly and reliably. Lockhart-Martinelli correlation consists in a factor (also known as multiplier of Lockhart-Martinelli) that multiplies the liquid single-phase pressure drop. This correlation is widely used to calculate two-phase pressure drop but does not incorporate the effect of slug flow in corrugated pipes. In this experimental study, a flow loop was designed to measure the pressure drop of horizontal air-water slug flow in three different inner diameters (26 mm, 40 mm and 50 mm) of d-type corrugated pipes. The experimental results are fitted and a new correlation will be proposed for the multiplier of Lockhart-Martinelli that considerate the effect of the different diameters in d-type corrugated pipes for prediction of the pressure drop of horizontal liquid-gas slug flow.
Keywords
pressure drop, d-type corrugated pipes, Slug Flow, multiplier of Lockhart Martinelli
