Hydrodynamic forces in a horizontal-horizontal elbow in a gas-liquid system

García, César Leonardo Carvallo; Nemoto, Rafael Horschutz; Pereyra, Eduardo; Korelstein, L; Sarica, Cem

doi:10.1016/j.ijmultiphaseflow.2022.104321

Cited by 8 publications

(1 citation statement)

References 11 publications

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“…The slug flow is not always desired since its intermittent behavior allows the flow rates to oscillate which causes vibrations and higher pressure drop along the line increasing the chance of damaging the pipe supports. The flow is associated with operational problems, such as pipe fatigue occurring in turns and bends (Garcia et al, 2023, [1]), and erosion-corrosion enhancement. During slug flow, knowledge of the slug parameters is important for the design of production facilities, and the calculation of pressure drop and slug length.…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of the stochastic nature of slug flow

García

Korelstein²,

Sondermann

et al. 2023

E3S Web Conf.

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Slug flow is widely encountered in oil and gas systems. It has an unsteady hydrodynamic behavior that motivated the development of mechanistic models to better understand and quantify the parameters of the flow. The present work investigated several slug flow conditions through an experimental campaign that was performed in a 2-in ID horizontal pipe facility. The experimental data were statistically analyzed and they indicated the suitability of a lognormal distribution to model the flow characteristics, such as slug length, film length, and frequency. Based on the mean results, slug and film lengths tend to increase as more gas is present in the flow. The mean frequency indicated that higher frequencies are obtained with lower gas fractions. All the slugs from each test were individually studied using different approaches to analyze the data. The results suggest the existence of a relationship between the slug and film lengths when the slug unit is identified starting from a film region followed by a slug region. The values of the coefficient of determination for the relation between slug length and film length indicate a possible influence of other flow parameters of stochastic nature, such as slug liquid holdup, that could affect the behavior of the slugs.

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Section: Introductionmentioning

confidence: 99%

An experimental investigation of the stochastic nature of slug flow

García

Korelstein²,

Sondermann

et al. 2023

E3S Web Conf.

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Practical aspects of multiphase slug frequency: An overview

Arabi,

Höhn,

Pallares

et al. 2024

Can J Chem Eng

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Slug frequency, the number of liquid slugs passing through a point per unit of time, is an intrinsic parameter that is used to characterize multiphase slug flows in pipes. In this review we discuss practical aspects of slug frequency for industrial purposes from an examination of published literature and available experimental data. The review shows that slug frequency appears to play a key role in the modelling of intermittent flow using 1‐D mechanistic slug models and 3‐D computational fluid dynamics tools. In addition, various global parameters and phenomena used to design, optimize, and control industrial pipelines are directly impacted by slug frequency. This manuscript highlights the importance of slug frequency not only for petroleum engineering but also for chemical, nuclear, and mechanical engineering.

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