دورية أكاديمية
Numerical study of the fire-smoke temperature law in the shaft of a high-rise building under the chimney effect in winter
| العنوان: | Numerical study of the fire-smoke temperature law in the shaft of a high-rise building under the chimney effect in winter |
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| المؤلفون: | Huimin Cui, Juan Chen, Zeshuai Dong, Zhiming Han, Qingkuan Liu |
| المصدر: | Engineering Applications of Computational Fluid Mechanics, Vol 17, Iss 1 (2023) |
| بيانات النشر: | Taylor & Francis Group, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Engineering (General). Civil engineering (General) |
| مصطلحات موضوعية: | Chimney effect, numerical simulation, shaft, flue gas movement, neutral surface, Engineering (General). Civil engineering (General), TA1-2040 |
| الوصف: | Shaft structures in high-rise buildings may increase fire coverage due to chimney effects. However, few previous studies have considered the motion of the flue gas under the combined effect of the chimney effect and thermal buoyancy. So, we set a continuous gradient differential pressure opening based on the characteristics of the chimney effect in winter. The CFD method is used to simulate 12 operating conditions with different fire source locations and rates of heat release from the ignition source. We compare and analyze the temperature rise, the flue gas rise law and the variation of the thermal pressure difference between the inner and outer shafts for different fire source powers. The results show that, in the case of low-floor fires, the range of temperature appreciation and fluctuation at the local measurement point increases with the fire power and the distribution of temperature appreciation decreases with the height. The relationship between the dimensionless time and the dimensionless height of the flue gas layer is exponential for different fire position conditions. The fire causes the neutral surface to shift, and below the original neutral surface, the higher the position of the fire source, the more pronounced the shift of the neutral surface. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 19942060 1997-003X 1994-2060 |
| Relation: | https://doaj.org/toc/1994-2060; https://doaj.org/toc/1997-003X |
| DOI: | 10.1080/19942060.2023.2222811 |
| URL الوصول: | https://doaj.org/article/32d95bb970424d45a9de50ec9bbc0bea |
| رقم الأكسشن: | edsdoj.32d95bb970424d45a9de50ec9bbc0bea |
| قاعدة البيانات: | Directory of Open Access Journals |
PDF full text from Publisher 
Full Text Finder | تدمد: | 19942060 1997003X |
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| DOI: | 10.1080/19942060.2023.2222811 |