Study on temperature decay characteristics of fire smoke backflow layer in tunnels with wide-shallow cross-section

•Smoke temperature decay characteristics were studied experimentally and numerically.•Smoke transverse temperature decay was influenced significantly by aspect ratio.•Factors to affect smoke longitudinal temperature decay were discussed in detail.•A piecewise model to predict smoke temperature decay...

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Veröffentlicht in:	Tunnelling and underground space technology 2021-06, Vol.112, p.103874, Article 103874
Hauptverfasser:	Zhang, Tianhang, Wang, Ganyu, Hu, Haihang, Huang, Yadong, Zhu, Kai, Wu, Ke
Format:	Artikel
Sprache:	eng
Schlagworte:	Aspect ratio CFD Cross-sections Decay rate Fire damage Fires Heat loss Heat release rate Heat transfer Model testing Scaled model test Smoke Smoke temperature Structural damage Studies Temperature Temperature distribution Tunnel fire Tunnels Ventilation
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