Modeling low‐temperature–induced failure of pressurized pipelines

Mahgerefteh, H; Atti, Olufemi

doi:10.1002/aic.10719

Cited by 24 publications

(18 citation statements)

References 26 publications

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“…However, it should be pointed out that in this study the converse eff ect is observed only aft er the decompression wave has passed the transducer location. 21 For Case 3, heat transfer between the fl owing fl uid and the pipe wall is ignored. Table 2 gives the pipeline characteristics and prevailing conditions used to simulate the impact of heat transfer on the decompression behavior for pure CO 2 .…”

Section: Impact Of Pipe Roughnessmentioning

confidence: 99%

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

2012

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A transient multi‐phase outflow model is employed to study the effects of heat transfer and friction on the decompression behavior in CO2 pipelines. The model's predictions are compared to measurements obtained from a number of shock tube experiments for gaseous phase CO2 as well its various mixtures, typical of those found in the different capture technologies. Particular attention is paid to studying the impact of the stream impurities on the CO2 mixtures saturation pressures and the decompression wave speeds given their direct influence on the pipeline's propensity to running ductile fractures. © 2012 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Impact Of Pipe Roughnessmentioning

confidence: 99%

“…Comparison of the model's predictions against data recorded from full bore rupture experiments for relatively short pipelines (ca. 100 m) [18][19][20][21][22][23][24][25][26] containing pressurized hydrocarbons, and CO 2 shock tube experiments 17 indicate relatively good agreement.…”

Section: Theorymentioning

confidence: 99%

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

2012

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“…To answer the question whether a fracture will propagate or not, requires solving a coupled fluidstructure problem [2]. The initial depressurization due to the leak or fracture will cause fluid flow out of the pipe, as well as two depressurization waves propagating in opposite directions from the tips of the opening fracture.…”

Section: Introductionmentioning

confidence: 99%

CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods

et al. 2014

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One challenge in CCS is related to the prevention of running-ductile fracture in CO 2 -carrying pipelines. Commonly used tools for ensuring crack arrest in pipelines hinge mainly on semi-empirical models, which may not be appropriate for CO 2 transport since they have been developed and fitted for natural gas and older pipeline materials, and due to an assumed decoupling of the fluid decompression and fracture propagation phenomena. In this paper, we apply a coupled fluid-structure model to a case with pure dense liquid CO 2 in a modern high-toughness steel pipeline, and compare the results one would obtain from directly applying the uncoupled models to the same case without any re-fitting to test data. For this case, the coupled model indicates that a significantly thicker pipeline wall may be required to prevent running-ductile fracture than what is predicted by the uncoupled models. Therefore, using the uncoupled models for such cases might not be conservative.

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“…Even the pipeline's susceptibility to catastrophic long propagating fractures following a puncture is governed by the rate of loss of the inventory. 3 The safety of pressurized pipelines (see for example 4 ) has recently attracted renewed attention given that such mode of transportation is now widely accepted as the most practical way of conveying the captured CO 2 from fossil fuel power plants for subsequent sequestration. At concentrations greater than 7% v/v, the gas is likely to be instantly fatal.…”

Section: Introductionmentioning

confidence: 99%

When does a vessel become a pipe?

2011

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The conditions under which the transient outflow from a punctured pipeline may be approximated as that emanating from a vessel using a simplified analytically based vessel blowdown model (VBM) is investigated in this article. The above addresses the fundamental drawback of long computational run times associated with the numerically based techniques used for simulating pipeline puncture failures. The efficacy of the VBM is tested by comparison of its predictions against simulation data obtained using a validated rigorous but computationally demanding numerical technique based on the method of characteristics. The results show that the accuracy of the VBM increases with decreasing puncture/pipe diameter ratio, line pressure, and increasing pipeline length. Surprisingly, the VBM produces more accurate predictions for twophase mixtures when compared with permanent gases. This is found to be a consequence of the better applicability of the isothermal bulk fluid decompression assumption within the pipeline in the case of two-phase mixtures.

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Modeling low‐temperature–induced failure of pressurized pipelines

Cited by 24 publications

References 26 publications

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

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

CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods

When does a vessel become a pipe?

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Modeling low‐temperature–induced failure of pressurized pipelines

Cited by 24 publications

References 26 publications

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

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

CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods

When does a vessel become a pipe?

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Product

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

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