Open Access
PROCEEDINGS
Study on the Influence of the Longitudinal Position of the Fire Source on the Movement Behavior of the Asymmetric Flow Field in Tunnel Fire
Lu He1,*, Yuhang Zhou1, Guoqing Zhu1
1 School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
* Corresponding Author: Lu He. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08939
Abstract
The longitudinal position of the fire source is one of the key parameters affecting the flow field
characteristics in a long-distance tunnel. In this paper, a series of numerical simulations were carried out to
analyze the influence of the longitudinal position and the heat release rate (HRR) on the induced airflow on
both sides of the fire source and the smoke movement behaviors characteristics in the long-distance tunnel.
It is found that under the induction of thermal pressure, an asymmetric induced air flow is formed near the
fire source, resulting in asymmetric dynamic parameters of ceiling jet. The wind speed of the ceiling jet
gradually decreases during the movement to the tunnel outlet, and the inertia force and turbulence intensity
are continuously weakened. At a certain position, the ceiling jet will be reversely entrained by the induced
airflow. The mass flow rate and thickness of the ceiling jet show the characteristics of increasing first and
then decreasing in the longitudinal direction. In addition, A theoretical prediction model for the mass flow
rate of the asymmetric flow field is proposed.
Keywords
Cite This Article
APA Style
He, L., Zhou, Y., Zhu, G. (2023). Study on the influence of the longitudinal position of the fire source on the movement behavior of the asymmetric flow field in tunnel fire. The International Conference on Computational & Experimental Engineering and Sciences, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08939
Vancouver Style
He L, Zhou Y, Zhu G. Study on the influence of the longitudinal position of the fire source on the movement behavior of the asymmetric flow field in tunnel fire. Int Conf Comput Exp Eng Sciences . 2023;26(2):1-1 https://doi.org/10.32604/icces.2023.08939
IEEE Style
L. He, Y. Zhou, and G. Zhu "Study on the Influence of the Longitudinal Position of the Fire Source on the Movement Behavior of the Asymmetric Flow Field in Tunnel Fire," Int. Conf. Comput. Exp. Eng. Sciences , vol. 26, no. 2, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.08939