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Research Article

Numerical studies on swirling of internal fire whirls with experimental justifications

Zheming Gao1,2, S.S. Li2, Y. Gao2, H.Y. Hung3, Wan-ki Chow3( )
Midea Residential Air Conditioner Division, Foshan, Guangdong, China
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, Heilongjiang, China
Department of Building Services Engineering, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
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Abstract

Numerical studies on internal fire whirls (IFW) generated in a vertical shaft model with a single corner gap were reported in this paper. The generation of IFW, burning rate of fuel and temperature were studied experimentally first. Numerical simulations on medium-scale IFW were carried out using a fully-coupled large eddy simulation incorporating subgrid scale turbulence and a fire source with heat release rates compiled from experimental results. Typical transient flame shape was studied and then simulated numerically by using temperature. The dynamic phenomena of generation and development of IFW were simulated and then compared with experimental results. The predicted results were validated by comparing with experimental data, which demonstrated that an IFW can be simulated by Computational Fluid Dynamics. Numerical results for flame surface, temperature, and flame length agreed well with the experimental results. The IFW flame region and intermittent region were longer than those for an ordinary pool fire. The modified empirical formula for centerline temperature was derived. Variations of vertical and tangential velocity in axial and radial directions were also shown. The vortex core radius was found to be determined by the fuel bed size. Velocity field was not measured extensively due to resources limitation. Comparing measured temperature distribution with predictions is acceptable because temperature is related to the heat release rate, air flow and pressure gradient.

Keywords

large eddy simulationinternal fire whirlvertical structureflame surface

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References

 
Bullen ML, Thomas PH (1979). Compartment fires with non-cellulosic fuels. Symposium (International) on Combustion, 17: 1139-1148.
Crossref Google Scholar
 
Cai N, Chow WK (2014). Numerical studies on heat release rate in a room fire burning wood and liquid fuel. Building Simulation, 7: 511-524.
Crossref Google Scholar
 
Cheung SCP, Yeoh GH (2009). A fully-coupled simulation of vortical structures in a large-scale buoyant pool fire. International Journal of Thermal Sciences, 48: 2187-2202.
Crossref Google Scholar
 
Chow WK (1995). Use of computational fluid dynamics for simulating enclosure fires. Journal of Fire Sciences, 13: 300-334.
Crossref Google Scholar
 
Chow WK, Han SS (2009). Experimental investigation on onsetting internal fire whirls in a vertical shaft. Journal of Fire Sciences, 27: 529-543.
Crossref Google Scholar
 
Chow WK (2013). Air pumping action of a plume in a room fire. Building Simulation, 6: 95-102.
Crossref Google Scholar
 
Chow WK, Dang JF, Gao Y, et al. (2017). Dependence of flame height of internal fire whirl in a vertical shaft on fuel burning rate in pool fire. Applied Thermal Engineering, 121: 712-720.
Crossref Google Scholar
 
Chuah KH, Kuwana K, Saito K (2009). Modeling a fire whirl generated over a 5-cm-diameter methanol pool fire. Combustion and Flame, 156: 1828-1833.
Crossref Google Scholar
 
Dahanayake KC, Yang Y, Wan Y, et al. (2020). Study on the fire growth in underground green corridors. Building Simulation, 13: 627-635.
Crossref Google Scholar
 
Emmons HW, Ying SJ (1996). The fire whirl. In: Proceedings of the 11th international Symposium on Combustion, Berkeley, CA, USA.
 
Gao Z, Li S, Gao Y, et al. (2019). Experimental studies on characteristics of fire whirl in a vertical shaft. Fire and Materials, 43: 229-240.
Crossref Google Scholar
 
Gong J, Li Y (2010). CFD modelling of the effect of fire source geometry and location on smoke flow multiplicity. Building Simulation, 3: 205-214.
Crossref Google Scholar
 
Harish R, Venkatasubbaiah K (2015). Large eddy simulation of thermal plume behavior in horizontally partitioned dual enclosure. Building Simulation, 8: 137-148.
Crossref Google Scholar
 
Jain S, Shashi, Kumar S (2011). Numerical studies on evaluation of smoke control system of underground metro rail transport system in India having jet injection system: A case study. Building Simulation, 4: 205-216.
Crossref Google Scholar
 
Jiang Y, Chen Q (2001). Study of natural ventilation in buildings by large eddy simulation. Journal of Wind Engineering and Industrial Aerodynamics, 89: 1155-1178.
Crossref Google Scholar
 
Lei J, Liu N, Lozano JS, et al. (2013). Experimental research on flame revolution and precession of fire whirls. Proceedings of the Combustion Institute, 34: 2607-2615.
Crossref Google Scholar
 
Lei J, Liu N, Zhang L, et al. (2015). Temperature, velocity and air entrainment of fire whirl plume: A comprehensive experimental investigation. Combustion and Flame, 162: 745-758.
Crossref Google Scholar
 
Lei J, Liu N, Tu R (2017). Flame height of turbulent fire whirls: A model study by concept of turbulence suppression. Proceedings of the Combustion Institute, 36: 3131-3138.
Crossref Google Scholar
 
Li S, Yao Q, Law CK (2019). The bottom boundary-layer structure of fire whirls. Proceedings of the Combustion Institute, 37: 4277-4284.
Crossref Google Scholar
 
Liu SL, Chow WK (2002). A review on numerical simulation of turbulent flow. International Journal on Architectural Science, 3(2): 77-102.
Google Scholar
 
Ma TG, Quintiere JG (2003). Numerical simulation of axi-symmetric fire plumes: Accuracy and limitations. Fire Safety Journal, 38: 467-492.
Crossref Google Scholar
 
McCaffrey BJ (1979). Purely buoyant diffusion flames: Some experimental results, NBSIR 79-1910. Gaithersburg, MD, USA: National Bureau of Standards.
 
McGrattan KB (2004). Fire Dynamics Simulator (Version 4)—Technical Reference Guide, NIST Special Publication 1018. Gaithersburg, MD, USA: National Institute of Standards and Technology.
 
McGrattan KB, Forney GP (2004). Fire Dynamics Simulator (Version 4)—User Guide. NIST Special Publication 1019. Gaithersburg, MD, USA: National Institute of Standards and Technology.
 
Murakami S (1998). Overview of turbulence models applied in CWE-1997. Journal of Wind Engineering and Industrial Aerodynamics, 74-76: 1-24.
Crossref Google Scholar
 
Sahu D, Kumar S, Jain S, et al. (2017). Full scale experimental and numerical studies on effect of ventilation in an enclosure diesel pool fire. Building Simulation, 10: 351-364.
Crossref Google Scholar
 
Satoh K, Yang KT (1996). Experimental observations of swirling fires. In: Proceedings of ASME Heat Transfer Division, HTD-Vol. 335, pp. 393-400.
 
Satoh K, Yang KT (1997). Simulation of swirling fires controlled by channeled self-generated entrainment flows. In: Proceedings the 5th International Symposium, International Association for Fire Safety Science, pp. 208-216.
Crossref
 
Satoh K, Yang KT (1998). Experiments and numerical simulations of swirling fires due to 2×2 flames in a channel with single corner gap. In: Proceedings of ASME International Mechanical Engineering Congress and Exposition, ASME Heat Transfer Division, Anaheim, CA, USA.
Crossref
 
Satoh K, Yang KT (1999). Measurements of fire whirl from a single flame in a vertical square channel with symmetrical corner gaps. In: Proceedings of ASME International Mechanical Engineering Congress and Exposition, ASME Heat Transfer Division, Nashville, TN, USA.
Crossref
 
Snegirev AY, Marsden JA, Francis J, et al. (2004). Numerical studies and experimental observations of whirling flames. International Journal of Heat and Mass Transfer, 47: 2523-2539.
Crossref Google Scholar
 
Soma S, Saito K (1991). Reconstruction of fire whirls using scale models. Combustion and Flame, 86: 269-284.
Crossref Google Scholar
 
Tohidi A, Gollner MJ, Xiao H (2018). Fire whirls. Annual Review of Fluid Mechanics, 50: 187-213.
Crossref Google Scholar
 
Wang H (2009). Numerical study of under-ventilated fire in medium-scale enclosure. Building and Environment, 44: 1215-1227.
Crossref Google Scholar
 
Williams FA (2017). Scaling fire whirls. Keynote lecture, In: Proceedings of the 8th International Symposium on Scale Modelling (ISSM-8), Portland, OR, USA.
 
Yu H, Guo S, Peng M, et al. (2013). Study on the influence of air-inlet width on fire whirls combustion characteristic. Procedia Engineering, 62: 813-820.
Crossref Google Scholar
 
Yuen ACY, Yeoh GH, Alexander B, et al. (2014). Fire scene investigation of an arson fire incident using computational fluid dynamics based fire simulation. Building Simulation, 7: 477-487.
Crossref Google Scholar
 
Zhang W, Chen Q (2000). Large eddy simulation of indoor airflow with a filtered dynamic subgrid scale model. International Journal of Heat and Mass Transfer, 43: 3219-3231.
Crossref Google Scholar
 
Zhang W, Hamer A, Klassen M, et al. (2002). Turbulence statistics in a fire room model by large eddy simulation. Fire Safety Journal, 37: 721-752.
Crossref Google Scholar
 
Zhou X, Luo KH, Williams JJR (2001). Numerical studies on vortex structures in the near-field of oscillating diffusion flames. Heat and Mass Transfer, 37: 101-110.
Crossref Google Scholar
 
Zou GW, Chow WK (2015). Generation of an internal fire whirl in an open roof vertical shaft model with a single corner gap. Journal of Fire Sciences, 33: 183-201.
Crossref Google Scholar
 
Zukoski EE, Kubota T, Cetegen B (1981). Entrainment in fire plumes. Fire Safety Journal, 3: 107-121.
Crossref Google Scholar
Building Simulation
Volume 14 Issue 5,
October 2021
Pages 1499-1509
DOI: 10.1007/s12273-020-0756-5
Cite this article:
Gao Z, Li S, Gao Y, et al. Numerical studies on swirling of internal fire whirls with experimental justifications. Building Simulation, 2021, 14(5): 1499-1509. https://doi.org/10.1007/s12273-020-0756-5

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Received: 04 June 2020
Accepted: 03 December 2020
Published: 24 February 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021
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