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    Rights statement: This is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, 306, 2016 DOI: 10.1016/j.jhazmat.2015.12.026

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A modelling study of the multiphase leakage flow from pressurised CO2 pipeline

Research output: Contribution to journalJournal article

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  • Xuejin Zhou
  • Kang Li
  • Ran Tu
  • Jianxin Yi
  • Qiyuan Xie
  • Xi Jiang
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<mark>Journal publication date</mark>5/04/2016
<mark>Journal</mark>Journal of Hazardous Materials
Volume306
Number of pages9
Pages (from-to)286-294
Publication statusPublished
Early online date22/12/15
Original languageEnglish

Abstract

The accidental leakage is one of the main risks during the pipeline transportation of high pressure CO2. The decompression process of high pressure CO2 involves complex phase transition and large variations of the pressure and temperature fields. A mathematical method based on the homogeneous equilibrium mixture assumption is presented for simulating the leakage flow through a nozzle in a pressurised CO2 pipeline. The decompression process is represented by two sub-models: the flow in the pipe is represented by the blowdown model, while the leakage flow through the nozzle is calculated with the capillary tube assumption. In the simulation, two kinds of real gas equations of state were employed in this model instead of the ideal gas equation of state. Moreover, results of the flow through the nozzle and measurement data obtained from laboratory experiments of pressurised CO2 pipeline leakage were compared for the purpose of validation. The thermodynamic processes of the fluid both in the pipeline and the nozzle were described and analysed.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, 306, 2016 DOI: 10.1016/j.jhazmat.2015.12.026