期刊
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
卷 78, 期 -, 页码 215-221出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tust.2018.04.028
关键词
Buoyancy ceiling flow; Temperature decay; Longitudinal wind; Ceiling extraction; Channel fire
资金
- National Nature Foundation of China [51776060, 51606057]
- Fundamental Research Funds for the Central Universities of China [JZ2017HGTB0186]
- China Postdoctoral Science Foundation [2016M602008]
Experiments were carried out in a horizontal channel to investigate the longitudinal thermal plume temperature distribution of buoyancy-driven ceiling jet beneath the ceiling with the coupling effect of longitudinal wind and ceiling extraction. It was found that: (a) the thermal plume longitudinal temperature decays faster in upstream than that in downstream with combination of both ceiling extraction and longitudinal wind; (b) a new correlation is proposed to characterize buoyant thermal plume longitudinal temperature distribution beneath ceiling in both upstream and downstream direction. The predictions of the proposed model are in good agreement with the experiment measured value.
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