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Keywords = plume attachment criteria

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16 pages, 14642 KB  
Article
Examining the Existing Criteria for the Evaluation of Window Ejected Plume Attachment
by Jianlong Xing, Chaoting Nie, Bin Zheng and Lei Miao
Fire 2025, 8(5), 168; https://doi.org/10.3390/fire8050168 - 23 Apr 2025
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Abstract
Both single-skin and double-skin glass facades are extensively employed in commercial high-rise buildings and are gaining increasing popularity. However, the capability to deploy firefighting agents in such ultra-high structures remains limited and has been minimally investigated. To provide guidance for single-layer exterior wall [...] Read more.
Both single-skin and double-skin glass facades are extensively employed in commercial high-rise buildings and are gaining increasing popularity. However, the capability to deploy firefighting agents in such ultra-high structures remains limited and has been minimally investigated. To provide guidance for single-layer exterior wall fire protection, this study examines the impact of vertical walls on window ejected plumes by simulating the upper portion of jet plumes using a square burner flame. Experimental and numerical simulations were conducted. The findings revealed that plumes from propane burners could attach to the wall even when LE. burner fire > 0.7W, contradicting previous criteria. This discrepancy arises because prior studies underestimated the induced pressure difference in large fires. This pressure difference propels the plume toward the wall, behaving like a rigid body. Full article
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