Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation
This thesis investigated the risk of accidental release of hydrocarbons during transportation and storage. Transportation of hydrocarbons from an offshore platform to processing units through subsea pipelines involves risk of release due to pipeline leakage resulting from corrosion, plastic deformat...
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ftmemorialuniv:oai:research.library.mun.ca:11923 2023-10-01T03:54:19+02:00 Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation Jujuly, Muhammad Masum 2016-05 application/pdf https://research.library.mun.ca/11923/ https://research.library.mun.ca/11923/1/thesis.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/11923/1/thesis.pdf Jujuly, Muhammad Masum <https://research.library.mun.ca/view/creator_az/Jujuly=3AMuhammad_Masum=3A=3A.html> (2016) Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2016 ftmemorialuniv 2023-09-03T06:48:31Z This thesis investigated the risk of accidental release of hydrocarbons during transportation and storage. Transportation of hydrocarbons from an offshore platform to processing units through subsea pipelines involves risk of release due to pipeline leakage resulting from corrosion, plastic deformation caused by seabed shakedown or damaged by contact with drifting iceberg. The environmental impacts of hydrocarbon dispersion can be severe. Overall safety and economic concerns of pipeline leakage at subsea environment are immense. A large leak can be detected by employing conventional technology such as, radar, intelligent pigging or chemical tracer but in a remote location like subsea or arctic, a small chronic leak may be undetected for a period of time. In case of storage, an accidental release of hydrocarbon from the storage tank could lead pool fire; further it could escalate to domino effects. This chain of accidents may lead to extremely severe consequences. Analyzing past accident scenarios it is observed that more than half of the industrial domino accidents involved fire as a primary event, and some other factors for instance, wind speed and direction, fuel type and engulfment of the compound. In this thesis, a computational fluid dynamics (CFD) approach is taken to model the subsea pipeline leak and the pool fire from a storage tank. A commercial software package ANSYS FLUENT Workbench 15 is used to model the subsea pipeline leakage. The CFD simulation results of four different types of fluids showed that the static pressure and pressure gradient along the axial length of the pipeline have a sharp signature variation near the leak orifice at steady state condition. Transient simulation is performed to obtain the acoustic signature of the pipe near leak orifice. The power spectral density (PSD) of acoustic signal is strong near the leak orifice and it dissipates as the distance and orientation from the leak orifice increase. The high-pressure fluid flow generates more noise than the low-pressure fluid ... Thesis Arctic Iceberg* Memorial University of Newfoundland: Research Repository Arctic |
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description |
This thesis investigated the risk of accidental release of hydrocarbons during transportation and storage. Transportation of hydrocarbons from an offshore platform to processing units through subsea pipelines involves risk of release due to pipeline leakage resulting from corrosion, plastic deformation caused by seabed shakedown or damaged by contact with drifting iceberg. The environmental impacts of hydrocarbon dispersion can be severe. Overall safety and economic concerns of pipeline leakage at subsea environment are immense. A large leak can be detected by employing conventional technology such as, radar, intelligent pigging or chemical tracer but in a remote location like subsea or arctic, a small chronic leak may be undetected for a period of time. In case of storage, an accidental release of hydrocarbon from the storage tank could lead pool fire; further it could escalate to domino effects. This chain of accidents may lead to extremely severe consequences. Analyzing past accident scenarios it is observed that more than half of the industrial domino accidents involved fire as a primary event, and some other factors for instance, wind speed and direction, fuel type and engulfment of the compound. In this thesis, a computational fluid dynamics (CFD) approach is taken to model the subsea pipeline leak and the pool fire from a storage tank. A commercial software package ANSYS FLUENT Workbench 15 is used to model the subsea pipeline leakage. The CFD simulation results of four different types of fluids showed that the static pressure and pressure gradient along the axial length of the pipeline have a sharp signature variation near the leak orifice at steady state condition. Transient simulation is performed to obtain the acoustic signature of the pipe near leak orifice. The power spectral density (PSD) of acoustic signal is strong near the leak orifice and it dissipates as the distance and orientation from the leak orifice increase. The high-pressure fluid flow generates more noise than the low-pressure fluid ... |
format |
Thesis |
author |
Jujuly, Muhammad Masum |
spellingShingle |
Jujuly, Muhammad Masum Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
author_facet |
Jujuly, Muhammad Masum |
author_sort |
Jujuly, Muhammad Masum |
title |
Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
title_short |
Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
title_full |
Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
title_fullStr |
Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
title_full_unstemmed |
Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
title_sort |
computational fluid dynamics (cfd) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation |
publisher |
Memorial University of Newfoundland |
publishDate |
2016 |
url |
https://research.library.mun.ca/11923/ https://research.library.mun.ca/11923/1/thesis.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Iceberg* |
genre_facet |
Arctic Iceberg* |
op_relation |
https://research.library.mun.ca/11923/1/thesis.pdf Jujuly, Muhammad Masum <https://research.library.mun.ca/view/creator_az/Jujuly=3AMuhammad_Masum=3A=3A.html> (2016) Computational fluid dynamics (CFD) based approach to consequence assessment of accidental release of hydrocarbon during storage and transportation. Masters thesis, Memorial University of Newfoundland. |
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1778521806212169728 |