Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures
The flow of leaked hydrogen gas in tunnel structures is simulated through a free, open source computational fluid dynamics (CFD) code for incompressible thermal convection flow. A one-fifth scale experimental model of a real tunnel is the target model to be simulated. To achieve this, studies on the...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2012/846517 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552098637545472 |
|---|---|
| author | Idris Ismail Hisayoshi Tsukikawa Hiroshi Kanayama |
| author_facet | Idris Ismail Hisayoshi Tsukikawa Hiroshi Kanayama |
| author_sort | Idris Ismail |
| collection | DOAJ |
| description | The flow of leaked hydrogen gas in tunnel structures is simulated through a free, open source computational fluid dynamics (CFD) code for incompressible thermal convection flow. A one-fifth scale experimental model of a real tunnel is the target model to be simulated. To achieve this, studies on the effects of different boundary conditions, in particular, the wind speed, are carried out on smaller tunnel structures with the same hydrogen inlet boundary conditions. The results suggest a threshold/limiting value of air speed through tunnel. The target model computed with the most suitable boundary conditions shows some agreement with the experimental ones. A method to compute the buoyancy factor used in the code is also presented. |
| format | Article |
| id | doaj-art-c43afb70a9904fe4b4b035b2a455501f |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-c43afb70a9904fe4b4b035b2a455501f2025-02-03T05:59:33ZengWileyJournal of Applied Mathematics1110-757X1687-00422012-01-01201210.1155/2012/846517846517Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel StructuresIdris Ismail0Hisayoshi Tsukikawa1Hiroshi Kanayama2Department of Mechanical Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, JapanDepartment of Mechanical Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, JapanDepartment of Mechanical Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, JapanThe flow of leaked hydrogen gas in tunnel structures is simulated through a free, open source computational fluid dynamics (CFD) code for incompressible thermal convection flow. A one-fifth scale experimental model of a real tunnel is the target model to be simulated. To achieve this, studies on the effects of different boundary conditions, in particular, the wind speed, are carried out on smaller tunnel structures with the same hydrogen inlet boundary conditions. The results suggest a threshold/limiting value of air speed through tunnel. The target model computed with the most suitable boundary conditions shows some agreement with the experimental ones. A method to compute the buoyancy factor used in the code is also presented.http://dx.doi.org/10.1155/2012/846517 |
| spellingShingle | Idris Ismail Hisayoshi Tsukikawa Hiroshi Kanayama Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures Journal of Applied Mathematics |
| title | Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures |
| title_full | Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures |
| title_fullStr | Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures |
| title_full_unstemmed | Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures |
| title_short | Modelling Considerations in the Simulation of Hydrogen Dispersion within Tunnel Structures |
| title_sort | modelling considerations in the simulation of hydrogen dispersion within tunnel structures |
| url | http://dx.doi.org/10.1155/2012/846517 |
| work_keys_str_mv | AT idrisismail modellingconsiderationsinthesimulationofhydrogendispersionwithintunnelstructures AT hisayoshitsukikawa modellingconsiderationsinthesimulationofhydrogendispersionwithintunnelstructures AT hiroshikanayama modellingconsiderationsinthesimulationofhydrogendispersionwithintunnelstructures |