کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6782063 | 1432264 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Smoke spread characteristics inside a tunnel with natural ventilation under a strong environmental wind
ترجمه فارسی عنوان
خصوصیات تنفس در داخل یک تونل با تهویه طبیعی تحت یک باد محیط زیست قوی گسترش می یابد
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کلمات کلیدی
باد محیطی، تونل، شفت، تهویه طبیعی، گسترش دود،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
In order to investigate the effect of strong environmental wind on a tunnel fire under natural ventilation, a series of numerical simulations were conducted using large eddy simulation method in this study. A tunnel model was established by a numerical simulation software, Fire Dynamics Simulator, to investigate the smoke movement under the stack effect induced inside a shaft. Four environmental wind speeds (39â¯m/s) and three heat release rates (3-20â¯MW) were considered. The smoke spread velocity inside the tunnel, downdraught phenomenon at the early stage of fire, smoke exhaust characteristics at the steady period of fire, temperature distribution in the tunnel and shaft, and occurrence of plug-holing were studied in detail, based on some typical characteristic parameters, such as mass flow rate, temperature and velocity vector. The results can be considered as a reference for the fire protection design of a tunnel with natural ventilation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tunnelling and Underground Space Technology - Volume 82, December 2018, Pages 99-110
Journal: Tunnelling and Underground Space Technology - Volume 82, December 2018, Pages 99-110
نویسندگان
Chuangang Fan, Li Zhang, Shucheng Jiao, Zhiwei Yang, Manhou Li, Xiaoping Liu,