THREE-PHASE FLOW IN CIRCULAR CYLINDRICAL DUCT WITH LEAK: A NUMERICAL STUDY BY CFD
Wanessa Raphaella Gomes dos Santos1; Helton Gomes Alves1; Boniek Evangelista Leite1; Severino Rodrigues de Farias Neto1; Antonio Gilson Barbosa de Lima1
1 Universidade Federal de Campina Grande
doi:10.20906/CPS/COB-2015-1528
Resumo
Pipeline is a conventional, efficient and economic way for oil transportation, but the operation of pipelines is subject to failure because of to the action of agents physicochemical nature that eventually deteriorate part of the duct (corrosion, disruptions). Leakage monitoring systems must be capable to detect and locate a leak in few minutes, reducing risks of environmental and socioeconomics impacts. The use of a good system for detecting and locating leaks in pipeline contribute significantly to operational safety and cost saving petroleum industry. When a leak occurs, the pressure wave will propagate through the pipeline depending on the position and shape of the leak. For an efficient detection, we must determine and understand the hydrodynamics of flow inside the duct in each instant of time after the occurrence of leak. In this sense, the aim of this research is to study the fluid dynamic of the three phases flow in a vertical pipe with and without leakage by CFD (ANSYS CFX ®). Results of the pressure, velocity and volume fraction of the phases (oil, water and gas) are present and analyzed.
Palavras-chave: three-phase flow; leak; numerical simulation; Ansys CFX