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Open Access

ARTICLE

Numerical Simulation of Gas-LiquId Flow in a Horizontal Elbow

Lihui Ma1, Wei Li1, Yuanyuan Wang1, Pan Zhang1, Lina Wang1, Xinying Liu1, Meiqin Dong2, Xuewen Cao2, Jiang Bian3,*
1 Technical Inspection Center, Sionpec Shengli Oilfield Company, Dongying, 257000, China
2 College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, 266580, China
3 School of Petroleum Engineering, Yangtze University, Wuhan, 430100, China
* Corresponding Author: Jiang Bian. Email: email
(This article belongs to the Special Issue: Computational Fluid Dynamics: Two- and Three-dimensional fluid flow analysis over a body using commercial software)

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.058295

Received 09 September 2024; Accepted 03 December 2024; Published online 26 December 2024

Abstract

Gas-liquid flow (GLF), especially slug and annular flows in oil and gas gathering and transportation pipelines, become particularly complex inside elbows and can easily exacerbate pipeline corrosion and damage. In this study, FLUENT was used to conduct 3D simulations of slug and annular flow in elbows for different velocities to assess the ensuing changes in terms of pressure. In particular, the multifluid VOF (Volume of Fraction) model was chosen. The results indicate that under both slug and annular flow conditions, the pressure inside the elbow is lower than the outside. As the superficial velocity of liquid and gas increase, the pressure and liquid flow velocity at different positions of the elbow also increase, while the secondary flow weakens. Under annular flow conditions, the liquid film on the outer side of the elbow is thicker than that on the inner side, and the liquid velocity in the main liquid film zone is the lowest.

Keywords

Gas-liquid flow; elbow; CFD; VOF model

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