A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe
In order to study the flow blending and transporting process of hydrogen that injects into the natural gas pipelines, a three-dimensional T-pipe blending model is established and the flow characteristics are investigated systematically by the large eddy simulation (LES). Firstly, the mathematical fo...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2024-12-01
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| Series: | Journal of Pipeline Science and Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667143324000131 |
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| _version_ | 1846128169471442944 |
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| author | Xin Ouyang Qiao He Chong Chai Yeqin Wang Tao Di Jingwei Zhou Xu Sun |
| author_facet | Xin Ouyang Qiao He Chong Chai Yeqin Wang Tao Di Jingwei Zhou Xu Sun |
| author_sort | Xin Ouyang |
| collection | DOAJ |
| description | In order to study the flow blending and transporting process of hydrogen that injects into the natural gas pipelines, a three-dimensional T-pipe blending model is established and the flow characteristics are investigated systematically by the large eddy simulation (LES). Firstly, the mathematical formulation of hydrogen-methane blending process is provided and the LES method is introduced and validated by a benchmark gas blending model having experimental data. Subsequently, the T-pipe blending model is presented, and the effects of key parameters, such as the velocity of main pipe, hydrogen blending ratio, diameter of hydrogen injection pipeline, diameter of main pipe and operating pressure on the hydrogen-methane blending process, are studied systematically. The results show that, under certain conditions, the gas mixture will be stratified downstream of the blending point, with hydrogen at the top of the pipeline and methane at the bottom of the pipeline. In the no-stratified scenario, the mixing distance increases at lower hydrogen mixing ratio and larger diameter of the hydrogen injection pipe or the main pipe. Finally, based on the numerical results, the underlying physics of the stratification phenomenon during the blending process are explored and an indicator for stratification is proposed using the ratio between the Reynolds numbers of the natural gas and hydrogen. |
| format | Article |
| id | doaj-art-4981b81a1e804ff09b1d09d9ccbceea6 |
| institution | Kabale University |
| issn | 2667-1433 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Journal of Pipeline Science and Engineering |
| spelling | doaj-art-4981b81a1e804ff09b1d09d9ccbceea62024-12-11T05:58:09ZengKeAi Communications Co. Ltd.Journal of Pipeline Science and Engineering2667-14332024-12-0144100186A numerical study on hydrogen blending in natural gas pipeline by a T-PipeXin Ouyang0Qiao He1Chong Chai2Yeqin Wang3Tao Di4Jingwei Zhou5Xu Sun6PipeChina Institute of Science and Technology, ChinaBeijing Design Branch, China Petroleum Engineering & Construction Corp., ChinaPipeChina Institute of Science and Technology, ChinaBeijing Design Branch, China Petroleum Engineering & Construction Corp., ChinaNational Engineering Laboratory for Oil and Gas Transport Pipeline Safety/MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, ChinaBeijing Design Branch, China Petroleum Engineering & Construction Corp., ChinaNational Engineering Laboratory for Oil and Gas Transport Pipeline Safety/MOE Key Laboratory of Petroleum Engineering, China University of Petroleum-Beijing, China; Corresponding author.In order to study the flow blending and transporting process of hydrogen that injects into the natural gas pipelines, a three-dimensional T-pipe blending model is established and the flow characteristics are investigated systematically by the large eddy simulation (LES). Firstly, the mathematical formulation of hydrogen-methane blending process is provided and the LES method is introduced and validated by a benchmark gas blending model having experimental data. Subsequently, the T-pipe blending model is presented, and the effects of key parameters, such as the velocity of main pipe, hydrogen blending ratio, diameter of hydrogen injection pipeline, diameter of main pipe and operating pressure on the hydrogen-methane blending process, are studied systematically. The results show that, under certain conditions, the gas mixture will be stratified downstream of the blending point, with hydrogen at the top of the pipeline and methane at the bottom of the pipeline. In the no-stratified scenario, the mixing distance increases at lower hydrogen mixing ratio and larger diameter of the hydrogen injection pipe or the main pipe. Finally, based on the numerical results, the underlying physics of the stratification phenomenon during the blending process are explored and an indicator for stratification is proposed using the ratio between the Reynolds numbers of the natural gas and hydrogen.http://www.sciencedirect.com/science/article/pii/S2667143324000131Natural gas pipelineHydrogen-methane blendingGas stratificationLarge eddy simulation |
| spellingShingle | Xin Ouyang Qiao He Chong Chai Yeqin Wang Tao Di Jingwei Zhou Xu Sun A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe Journal of Pipeline Science and Engineering Natural gas pipeline Hydrogen-methane blending Gas stratification Large eddy simulation |
| title | A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe |
| title_full | A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe |
| title_fullStr | A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe |
| title_full_unstemmed | A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe |
| title_short | A numerical study on hydrogen blending in natural gas pipeline by a T-Pipe |
| title_sort | numerical study on hydrogen blending in natural gas pipeline by a t pipe |
| topic | Natural gas pipeline Hydrogen-methane blending Gas stratification Large eddy simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2667143324000131 |
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