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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Hojati, S. Alireza Hanafizadeh, Pedram |
Copyright Year | 2014 |
Abstract | The flow patterns in two phase and multi-phase flows is a significant factor which influences many other parameters such as drag force, drag coefficient and pressure drop in pipe lines. One of the major streams in the gas and oil industries is oil-water two phase flow. The main flow patterns in oil-water flows are bubbly, slug, dual continuous, stratified and annular. In the present work flow patterns in two phase oil-water flow were investigated in a 0.5in diameter pipe with length of 2m. 3D simulation was used for this pipe and six types of mesh grid were used to investigate mesh independency of the simulation. The proposed numerical analyses were performed by a CFD package which is based both on volume of fluid (VOF) and Eulerian-Eulerian methods. The results showed that some flow patterns can be simulated better with VOF method and some other maybe in Eulerian-Eulerian method, so these two methods were compared with together for all flow patterns. The flow patterns may be a function of many parameters in flow. One of the important parameter which may affect flow patterns in pipe line is pipe inclination angle; therefore flow patterns in the different pipe inclination angles were investigated in two phase oil-water flow. The range of inclinations has been varied between −45 to +45 degree about the horizon. In the presented simulation oil is mixed with water via a circular hole at center of the pipe, the ratio of oil surface to water surface at entrance is 2/3 so water phase was considered as the main phase. Flow patterns were investigated for every angle of pipe and numerical results were compared with available experimental data for verification. Also the flow patterns simulated by numerical approaches were compared with available flow regime maps in the previous literatures. Finally, effect of pipe inclination angle and flow patterns on the pressure loss were investigated comprehensively. |
Sponsorship | International |
File Format | |
ISBN | 9780791845844 |
DOI | 10.1115/ESDA2014-20083 |
Volume Number | Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing |
Conference Proceedings | ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis |
Language | English |
Publisher Date | 2014-07-25 |
Publisher Place | Copenhagen, Denmark |
Access Restriction | Subscribed |
Subject Keyword | Water Computational fluid dynamics Multiphase flow Pipelines Workflow Drag (fluid dynamics) Pressure Flow (dynamics) Fluids Numerical analysis Simulation Two-phase flow Pressure drop Slug flows Pipes |
Content Type | Text |
Resource Type | Article |
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