ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Natural Gas Decompression Behavior in High Pressure Pipelines
Hiroyuki MakinoTakeshi SugieHiroshi WatanabeTakahiro KuboToyoaki ShiwakuShigeru EndoTakehiro InoueYoshiaki KawaguchiYoichiro MatsumotoSusumu Machida
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2001 Volume 41 Issue 4 Pages 389-395


This paper gives the analysis in the natural gas decompression behavior in pipelines as one of the important items for predicting the fracture safety of latest high-pressure natural gas transmission. By combining "British Gas Theoretical Model of Rich Gas Decompression" and "BWRS Equation of State", authors successfully developed the computational program, which can calculate dual-phase decompression curves of the natural gases. In the calculated results, the phenomenon of the "plateau" in the dual-phase decompression curve has been confirmed. Authors also numerically simulated the natural gas decompression behavior in pipelines and analyzed the fracture initiation process. It was shown that the initiation period is too short to influence the gas decompression curves.

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