Experimental study on the longitudinal temperature decay beneath ceiling in ventilated tunnel fires

被引：0
作者：
Lei Chen
Fei Tang
机构：
[1] Hefei University of Technology,School of Automotive and Transportation Engineering
来源：
Journal of Thermal Analysis and Calorimetry | 2020年 / 139卷
关键词：
Temperature decay; Longitudinal ventilation; Tunnel fire;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Tunnel fire has been increasingly concerned because it usually leads to catastrophic consequences. The longitudinal temperature profile is an important consideration in case of the tunnel fire, which is related to the response of the fire detections. This paper experimentally investigated the effect of the longitudinal ventilation on the ceiling temperature decay, including the location of the maximum temperature, which is conducted in a reduced-scale ventilated tunnel. The effective tunnel height, fire heat release rates and longitudinal ventilation speeds are taken into consideration. A modified correlation is developed by introducing the radius B for predicting the ceiling temperature rise decay in the ventilated tunnel fire.
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页码：3179 / 3184
页数：5
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[1]  
Król M(2017)Full scale measurements of the operation of fire ventilation in a road tunnel Tunn Undergr Space Technol 70 204-213
[2]  
Król A(2014)Reduced-scale experimental study of the temperature field and smoke development of the bus bar corridor fire in the underground hydraulic machinery plant Tunn Undergr Space Technol 41 95-103
[3]  
Koper P(2017)Evolution characteristics of fire smoke layer thickness in a mechanical ventilation tunnel with multiple point extraction Appl Therm Eng 111 248-256
[4]  
Wrona P(2017)Characterization of buoyant flow stratification behaviors by Richardson (Froude) number in a tunnel fire with complex combination of longitudinal ventilation and ceiling extraction Appl Therm Eng 110 1021-1028
[5]  
Li AG(2018)A study on the maximum temperature of ceiling jet induced by rectangular source fires in a tunnel using ceiling smoke extraction Int J Therm Sci 127 329-334
[6]  
Zhang Y(2008)Studies on buoyancy-driven back-layering flow in tunnel fires Exp Thermal Fluid Sci 32 1468-1483
[7]  
Hu J(2008)Critical wind velocity for arresting upwind gas and smoke dispersion induced by near-wall fire in a road tunnel J Hazard Mater 150 68-75
[8]  
Gao R(1993)Ceiling jets of strong fire plumes Fire Saf J 21 69-82
[9]  
Mei FZ(2018)Experimental study on temperature distribution of ceiling jet in tunnel fires under natural ventilation Proced Eng 211 674-680
[10]  
Tang F(2012)Temperature distribution of fire–induced flow along tunnels under natural ventilation J Fire Sci 30 121-136
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