Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines
One of the most important factors in pipeline hydraulics and its protection against probable damages is keeping the pressure in a specific limit and also knowing how the pressure functions in the pipe through the pipeline route. Pressure function and pressure amount differ from each other regardin...
| Main Authors: | , |
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| Format: | Article |
| Language: | fas |
| Published: |
Marvdasht Branch, Islamic Azad University
2019-10-01
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| Series: | مهندسی منابع آب |
| Subjects: | |
| Online Access: | https://wej.marvdasht.iau.ir/article_3888_c87e7dba38f680d2dca142be18ef4cb6.pdf |
| _version_ | 1797359670983131136 |
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| author | Zahra Ghadampour Mohammad sadegh Narges |
| author_facet | Zahra Ghadampour Mohammad sadegh Narges |
| author_sort | Zahra Ghadampour |
| collection | DOAJ |
| description | One of the most important factors in pipeline hydraulics and its protection against probable damages is keeping the pressure in a specific limit and also knowing how the pressure functions in the pipe through the pipeline route. Pressure function and pressure amount differ from each other regarding the phase of the fluid (single phase or multiple phase), and when gas phase (air) enters the pipeline, it affects the flow regime (simultaneously when gas-liquid flows there are such regimes as stratified, slug, etc.) and the applied pressure. The present study aims to investigate the effects of flow patterns and phases on maximum pressures along pipelines and to compare it with those of single-phase flows. Results show that the geometry and the percentage of entrained air are the main factors affecting flow patterns and pressure experienced by pipeline systems. For single phase mode, pressure is increased up to 26% in vertical upward flows compared to air-water flows with a different air percentage. Moreover, among various geometries considered in this research for two-phase flows, pressure at most has a 23- percent increase compared to that of single-phase flows. |
| first_indexed | 2024-03-08T15:27:05Z |
| format | Article |
| id | doaj.art-080f5a103afa40b6ac019e5c911af5fe |
| institution | Directory Open Access Journal |
| issn | 2008-6377 2423-7191 |
| language | fas |
| last_indexed | 2024-03-08T15:27:05Z |
| publishDate | 2019-10-01 |
| publisher | Marvdasht Branch, Islamic Azad University |
| record_format | Article |
| series | مهندسی منابع آب |
| spelling | doaj.art-080f5a103afa40b6ac019e5c911af5fe2024-01-10T08:10:57ZfasMarvdasht Branch, Islamic Azad Universityمهندسی منابع آب2008-63772423-71912019-10-01124277923888Effects of Flow Regimes on Maximum Pressure in Offshore PipelinesZahra Ghadampour0Mohammad sadegh Narges1Department of civil engineering, Islamic Azad University, Estahban BranchDepartment of civil engineering, Islamic Azad University, Estahban branchOne of the most important factors in pipeline hydraulics and its protection against probable damages is keeping the pressure in a specific limit and also knowing how the pressure functions in the pipe through the pipeline route. Pressure function and pressure amount differ from each other regarding the phase of the fluid (single phase or multiple phase), and when gas phase (air) enters the pipeline, it affects the flow regime (simultaneously when gas-liquid flows there are such regimes as stratified, slug, etc.) and the applied pressure. The present study aims to investigate the effects of flow patterns and phases on maximum pressures along pipelines and to compare it with those of single-phase flows. Results show that the geometry and the percentage of entrained air are the main factors affecting flow patterns and pressure experienced by pipeline systems. For single phase mode, pressure is increased up to 26% in vertical upward flows compared to air-water flows with a different air percentage. Moreover, among various geometries considered in this research for two-phase flows, pressure at most has a 23- percent increase compared to that of single-phase flows.https://wej.marvdasht.iau.ir/article_3888_c87e7dba38f680d2dca142be18ef4cb6.pdfmaximum pressuretwo phase flowoffshore pipelineflow regime |
| spellingShingle | Zahra Ghadampour Mohammad sadegh Narges Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines مهندسی منابع آب maximum pressure two phase flow offshore pipeline flow regime |
| title | Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines |
| title_full | Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines |
| title_fullStr | Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines |
| title_full_unstemmed | Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines |
| title_short | Effects of Flow Regimes on Maximum Pressure in Offshore Pipelines |
| title_sort | effects of flow regimes on maximum pressure in offshore pipelines |
| topic | maximum pressure two phase flow offshore pipeline flow regime |
| url | https://wej.marvdasht.iau.ir/article_3888_c87e7dba38f680d2dca142be18ef4cb6.pdf |
| work_keys_str_mv | AT zahraghadampour effectsofflowregimesonmaximumpressureinoffshorepipelines AT mohammadsadeghnarges effectsofflowregimesonmaximumpressureinoffshorepipelines |