A study of the effects of friction, heat transfer, and stream impurities on the decompression behavior in CO<sub>2</sub> pipelines

Mahgerefteh, H; Brown, Solomon; Martynov, Sergey

doi:10.1002/ghg.1302

Cited by 39 publications

(21 citation statements)

References 28 publications

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“…Bishnoi [21,22], PipeTech [23,24] and CFD-DECOM [25]. These are based entirely on assumptions of one-dimensional homogeneous-equilibrium fluid flow.…”

Section: Computational Fluid Dynamics (Cfd) Technique Have Been Develmentioning

confidence: 99%

“…These are based entirely on assumptions of one-dimensional homogeneous-equilibrium fluid flow. In these models the effects of friction, heat transfer, and pipe diameter can be considered, which is particularly relevant for smaller diameter and longer pipelines where friction could lead to a range of complex effects on local flow conditions, temperature, and pressure within the pipeline [24,[26][27][28][29]. CFD-based techniques involve discretising the governing partial differential equations of fluid flow.…”

Section: Computational Fluid Dynamics (Cfd) Technique Have Been Develmentioning

confidence: 99%

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Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

et al. 2015

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The development of CO2 pipelines for Carbon Capture and Storage (CCS) raises new questions regarding the control of ductile fracture propagation and fracture arrest toughness criteria. The decompression behaviour in the fluid must be determined accurately in order to estimate the proper pipe toughness. However, anthropogenic CO2 may contain impurities that can modify the fluid decompression characteristics quite significantly. To determine the decompression wave speed in CO2 mixtures, the thermodynamic properties of these mixtures must be determined by using an accurate equation of state. In this paper we present a new decompression model developed using the Computational Fluid Dynamics (CFD) package ANSYS Fluent. The GERG-2008 Equation of State (EOS) was implemented into this model through User Defined Functions (UDF) to predict the thermodynamic properties of CO2 mixtures. The model predictions were in good agreement with the experimental data of two 'shock tube' tests. A range of representative CO2 mixtures was examined in terms of the changes in fluid properties from the initial conditions, with time and distance, immediately after a sudden pipeline opening at one end. Phase changes that may occur within the fluid due to condensation of 'impurities' in the fluid were also investigated. Simulations were also conducted to examine how the initial temperature and impurities would affect the decompression wave speed.

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“…Bishnoi [21,22], PipeTech [23,24] and CFD-DECOM [25]. These are based entirely on assumptions of one-dimensional homogeneous-equilibrium fluid flow.…”

Section: Computational Fluid Dynamics (Cfd) Technique Have Been Develmentioning

confidence: 99%

Section: Computational Fluid Dynamics (Cfd) Technique Have Been Develmentioning

confidence: 99%

Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

et al. 2015

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“…As noted by various 298 authors (Mahgerefteh et al, 2012b;Munkejord et al, 2010) this later behaviour is largely due to 299 frictional and heat transfer effects, the modelling of which is outside of this study. 300 Figure 8 shows the thermodynamic trajectory at the closed end of the pipeline section during the 301 decompression relative to the dew and bubble lines.…”

mentioning

confidence: 81%

“…36 ms. In contrast, the measured data fall steadily throughout this period, this is likely in part due 314 to the effects of friction and heat transfer which the fluid model applied here does not capture 315 accurately (Mahgerefteh et al, 2012b). Notably the measured pressure at P14 indicates a 316 subsequent acceleration of the pressure drop at the time predicted by the fluid model.…”

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confidence: 89%

Thermodynamic interpolation for the simulation of two-phase flow of non-ideal mixtures

Brown

Peristeras

Martynov

et al. 2016

Computers & Chemical Engineering

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18This paper describes the development and application of a technique for the rapid interpolation of 19 thermodynamic properties of mixtures for the purposes of simulating two-phase flow. The 20 technique is based on adaptive inverse interpolation and can be applied to any Equation of State and 21 multicomponent mixture. Following analysis of its accuracy, the method is coupled with a two-phase 22 flow model, based on the homogeneous equilibrium mixture assumption, and applied to the 23 simulation of flows of carbon dioxide (CO 2 ) rich mixtures. This coupled flow model is used to 24 simulate the experimental decompression of binary and quinternary mixtures. It is found that the 25 predictions are in good agreement with the experimental data and that the interpolation approach 26 provides a flexible, robust means of obtaining thermodynamic properties for use in flow models. 27 28

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“…A number of common cubic equations of state, e.g. the Soave-Redlich-Kwong (SRK) ( ) and the Peng-Robinson (PR) (Peng and Robinson, 1976) equations of state were employed for this purpose in modelling pipeline decompression (Mahgerefteh et al, 2012a;Mahgerefteh et al, 2012b;Munkejord et al, 2010 has been applied to predict outflow from pipelines with small diameter punctures. For modelling purposes, a pipeline with an orifice at the release end is considered as depicted in Figure 5.…”

Section: Modelling Approachmentioning

confidence: 99%

An integrated, multi-scale modelling approach for the simulation of multiphase dispersion from accidental CO2 pipeline releases in realistic terrain

Woolley

Fairweather

Wareing

et al. 2014

International Journal of Greenhouse Gas Control

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The deployment of a complete carbon capture and storage chain requires a focus upon the hazards posed by the operation of pipelines transporting carbon dioxide (CO 2 ) at high pressure in a dense-phase (supercritical or liquid state). The consequences of an intentional or accidental release from such pipelines must be considered as an integral part of the design process. There are a number of unique challenges to modelling these releases due to the unusual phase-transition behaviour of CO 2 . Additionally, few experimental observations of large-scale CO 2 releases have been made, and the physics and thermochemistry involved are not fully understood. This work provides an overview of elements of the EC FP7CO2PipeHaz project, whose overall aim is to address these important and pressing issues, and to develop and validate mathematical models for multiphase discharge and dispersion from CO 2 pipelines. These are demonstrated here upon a full-scale pipeline release scenario, in which dense-phase CO 2 is released from a full-bore 36-inch pipeline rupture into a crater, and the resulting multiphase CO 2 plume disperses over complex terrain, featuring hills and valleys. This demonstration case is specifically designed to illustrate the integration of different models for the pipeline outflow, near-field and far-field dispersion.

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A study of the effects of friction, heat transfer, and stream impurities on the decompression behavior in CO₂ pipelines

Cited by 39 publications

References 28 publications

Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

Thermodynamic interpolation for the simulation of two-phase flow of non-ideal mixtures

An integrated, multi-scale modelling approach for the simulation of multiphase dispersion from accidental CO2 pipeline releases in realistic terrain

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A study of the effects of friction, heat transfer, and stream impurities on the decompression behavior in CO2 pipelines

Cited by 39 publications

References 28 publications

Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

Decompression wave speed in CO2 mixtures: CFD modelling with the GERG-2008 equation of state

Thermodynamic interpolation for the simulation of two-phase flow of non-ideal mixtures

An integrated, multi-scale modelling approach for the simulation of multiphase dispersion from accidental CO2 pipeline releases in realistic terrain

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A study of the effects of friction, heat transfer, and stream impurities on the decompression behavior in CO₂ pipelines