CFD-Based Erosion and Corrosion Modeling of a Pipeline with CO2-Containing GasWater Two-Phase Flow

CFD-Based Erosion and Corrosion Modeling of a Pipeline with CO2-Containing GasWater Two-Phase Flow

Natural gas

Natural gas pipelines

Carbon dioxide

Internal corrosion

Computational fluid dynamics

Shear stress

Shear flow

Two phase flow

Gases

Cavitation

A natural gas transportation pipeline with a gaswater two-phase flow containing CO2 is prone to severe flow-assisted corrosion (FAC). The accumulation location of the water phase in the pipeline and the wall shear stress distribution are important factors affecting the severity of this phenomenon. In this work, computational fluid dynamics (CFD) simulations were performed using the realizable k- model and volume of fluid (VOF) model to determine the gaswater volume fraction distribution and wall shear stress in a gaswater two-phase pipeline and established a pipeline corrosion prediction model. By determining where the water phase accumulates in the pipeline, the potential corrosion area could be predicted. By alleviating the phenomena of excessive local wall shear stress and bubble cavitation, the FAC due to the formation of stress and acid gas can be controlled. The simulation results lay a certain foundation for the corrosion research of gasliquid two-phase flow pipelines. 2022 by the authors. Licensee MDPI, Basel, Switzerland.

5

15

Energies

2022

Wang, Weiqiang

Sun, Yihe

Wang, Bo

Dong, Mei

Chen, Yiming

journalArticle

19961073

10.3390/en15051694