3-D simulation of gases transport under condition of inert gas injection into goaf
| العنوان: | 3-D simulation of gases transport under condition of inert gas injection into goaf |
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| المؤلفون: | Maoxi Liu, Yan-Ming Wang, Guoqing Shi, Zhixiong Guo, Li-Yang Ma |
| المصدر: | Heat and Mass Transfer. 52:2723-2734 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Fluid Flow and Transfer Processes, 021110 strategic, defence & security studies, Materials science, Spontaneous combustion, 3 d simulation, 020209 energy, 0211 other engineering and technologies, Floor level, Numerical simulation, 02 engineering and technology, Mechanics, Gas transport, Stress distribution, Fire Safety, Condensed Matter Physics, Phase (matter), Coal goaf, 0202 electrical engineering, electronic engineering, information engineering, Fluent, Inert gas, Porous medium |
| الوصف: | To prevent coal spontaneous combustion in mines, it is paramount to understand O2 gas distribution under condition of inert gas injection into goaf. In this study, the goaf was modeled as a 3-D porous medium based on stress distribution. The variation of O2 distribution influenced by CO2 or N2 injection was simulated based on the multi-component gases transport and the Navier-Stokes equations using Fluent. The numerical results without inert gas injection were compared with field measurements to validate the simulation model. Simulations with inert gas injection show that CO2 gas mainly accumulates at the goaf floor level; however, a notable portion of N2 gas moves upward. The evolution of the spontaneous combustion risky zone with continuous inert gas injection can be classified into three phases: slow inerting phase, rapid accelerating inerting phase, and stable inerting phase. The asphyxia zone with CO2 injection is about 1.25~2.4 times larger than that with N2 injection. The efficacy of preventing and putting out mine fires is strongly related with the inert gas injecting position. Ideal injections are located in the oxidation zone or the transitional zone between oxidation zone and heat dissipation zone. |
| تدمد: | 1432-1181 0947-7411 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bebc6d3cd51c77cc457ffd0cb04d6cf https://doi.org/10.1007/s00231-016-1775-8 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....1bebc6d3cd51c77cc457ffd0cb04d6cf |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 14321181 09477411 |
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