Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method
The dispersion behaviour of leaking hydrogen in a partially open space is simulated by a balancing domain decomposition method in this work. An analogy of the Boussinesq approximation is employed to describe the connection between the flow field and the concentration field. The linear systems of Nav...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2014/686873 |
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| _version_ | 1832560477829332992 |
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| author | Qing-He Yao Xin Pan |
| author_facet | Qing-He Yao Xin Pan |
| author_sort | Qing-He Yao |
| collection | DOAJ |
| description | The dispersion behaviour of leaking hydrogen in a partially open space is simulated by a balancing domain decomposition method in this work. An analogy of the Boussinesq approximation is employed to describe the connection between the flow field and the concentration field. The linear systems of Navier-Stokes equations and the convection diffusion equation are symmetrized by a pressure stabilized Lagrange-Galerkin method, and thus a balancing domain decomposition method is enabled to solve the interface problem of the domain decomposition system. Numerical results are validated by comparing with the experimental data and available numerical results. The dilution effect of ventilation is investigated, especially at the doors, where flow pattern is complicated and oscillations appear in the past research reported by other researchers. The transient behaviour of hydrogen and the process of accumulation in the partially open space are discussed, and more details are revealed by large scale computation. |
| format | Article |
| id | doaj-art-6ec951cb9c3a46aebdd0db4e78e406a5 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-6ec951cb9c3a46aebdd0db4e78e406a52025-02-03T01:27:30ZengWileyJournal of Applied Mathematics1110-757X1687-00422014-01-01201410.1155/2014/686873686873Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition MethodQing-He Yao0Xin Pan1School of Engineering, Sun Yat-Sen University, Guangzhou 510275, ChinaSchool of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, ChinaThe dispersion behaviour of leaking hydrogen in a partially open space is simulated by a balancing domain decomposition method in this work. An analogy of the Boussinesq approximation is employed to describe the connection between the flow field and the concentration field. The linear systems of Navier-Stokes equations and the convection diffusion equation are symmetrized by a pressure stabilized Lagrange-Galerkin method, and thus a balancing domain decomposition method is enabled to solve the interface problem of the domain decomposition system. Numerical results are validated by comparing with the experimental data and available numerical results. The dilution effect of ventilation is investigated, especially at the doors, where flow pattern is complicated and oscillations appear in the past research reported by other researchers. The transient behaviour of hydrogen and the process of accumulation in the partially open space are discussed, and more details are revealed by large scale computation.http://dx.doi.org/10.1155/2014/686873 |
| spellingShingle | Qing-He Yao Xin Pan Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method Journal of Applied Mathematics |
| title | Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method |
| title_full | Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method |
| title_fullStr | Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method |
| title_full_unstemmed | Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method |
| title_short | Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method |
| title_sort | large scale simulation of hydrogen dispersion by a stabilized balancing domain decomposition method |
| url | http://dx.doi.org/10.1155/2014/686873 |
| work_keys_str_mv | AT qingheyao largescalesimulationofhydrogendispersionbyastabilizedbalancingdomaindecompositionmethod AT xinpan largescalesimulationofhydrogendispersionbyastabilizedbalancingdomaindecompositionmethod |