Abstract
As the complex structure, the situation of fire accident of a bifurcated tunnel will be more severe than that of a long-straight tunnel. It is of practical significance to research the control effect of the water mist screens in the bifurcated tunnel fire. In this paper, a 1/10 scale bifurcated tunnel model is established based on FDS to study the heat insulation and smoke control effect of water mist screen under the action of longitudinal ventilation when a fire occurs at the fork. The results indicated that: The coupling of longitudinal ventilation and water mist has the most significant inhibition effect on ceiling temperature and ceiling CO concentration in the upstream area of main tunnel, the larger wind speed results in better heat insulation and smoke control effect in the upstream area of main tunnel. Overall, the more the number of water mist nozzle rows or the smaller the particle size, the better the control effect on the ceiling temperature and ceiling CO concentration of the main and branch tunnel. In addition, compared with the main road, the water mist screen section of branch tunnel has the limited ability to block the smoke diffusion.
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References
Adiga, K.C., Robert, F., Hatcher, J.A.: Computational and experimental study of ultra fine water mist as a total flooding agent. Fire Saf. J. 42, 150–160 (2007). https://doi.org/10.1016/j.firesaf.2006.08.010
White, J.P., Verma, S., Keller, E., Hao, A., Trouve, A., Marshall, A.W.: Water mist suppression of a turbulent line fire. Fire Saf. J. 91, 705–713 (2017). https://doi.org/10.1016/j.firesaf.2017.03.014
Chen, L.Y., Zhu, W., Cai, X., Pan, L.W., Liao, G.X.: Experimental study of water mist fire suppression in tunnels under longitudinal ventilation. Build. Environ. 44, 446–455 (2008). https://doi.org/10.1016/j.buildenv.2008.04.005
Blanchard, E., Boulet, P., Fromy, P., Desanghere, S., Carlotti, P., Vantelon, J., Garo, J.: Experimental and numerical study of the interaction between water mist and fire in an intermediate test tunnel. Fire Technol. 50, 565–587 (2013). https://doi.org/10.1007/s10694-013-0323-z
Li, Q.W., Zhang, P., Guo, S., Pan, P.M., Qin, J., Liao, G.X.: Experimental study on suppression of n-heptane pool fire with water mist under longitudinal ventilation in long and narrow spaces. Procedia Eng. 62, 946–953 (2013). https://doi.org/10.1016/j.proeng.2013.08.147
Wang, J., **e, Z.C., Lu, K.H., Jiang, X.P., Zhang, H.J.: Water spray flow rate effect on smoke temperature distribution under the ceiling in tunnel fires with longitudinal ventilation. Tunn. Undergr. Space Technol. 79, 190–196 (2018). https://doi.org/10.1016/j.tust.2018.05.01
Yang, Y.B., Yang, B., Bing, Z.: The study on influence of water mist particle size on fire smoke migration with longitudinal ventilation in road tunnel. Procedia Eng. 211, 917–924 (2018). https://doi.org/10.1016/j.proeng.2017.12.093
Li, J., Li, Y.F., Bi, Q., Li, Y., Chow, W.K., Cheng, C.H., To, C.W., Chow, C.L.: Performance evaluation on fixed water-based firefighting system in suppressing large fire in urban tunnels. Tunn. Undergr. Space Technol. 84, 56–69 (2019). https://doi.org/10.1016/j.tust.2018.10.020
Liu, Y.J., Fang, Z., Tang, Z., Beji, T., Merci, B.: The combined effect of a water mist system and longitudinal ventilation on the fire and smoke dynamics in a tunnel. Fire Saf. J. 122, 103–351 (2021). https://doi.org/10.1016/j.firesaf.2021.103351
Magdolenova, P.: CFD modelling of high-pressure water mist system in road tunnels. Transp. Res. Procedia 55, 1163–1170 (2021). https://doi.org/10.1016/j.trpro.2021.07.184
Sun, J.Y., Fang, Z., Tang, Z., Beji, T., Merci, B.: Experimental study of the effectiveness of a water system in blocking fire-induced smoke and heat in reduced-scale tunnel tests. Tunn. Undergr. Space Technol. 56, 34–44 (2016). https://doi.org/10.1016/j.tust.2016.02.005
Liang, Q., Li, Y.F., Li, J.M., Xu, H., Li, K.Y.: Numerical studies on the smoke control by water mist screens with transverse ventilation in tunnel fires. Tunn. Undergr. Space Technol. 64, 177–183 (2017). https://doi.org/10.1016/j.tust.2017.01.017
Wang, J.H., Nie, Q.M., Fang, Z., Tang, Z.: CFD Simulations of the interaction of the water mist zone and tunnel fire smoke in reduced-scale experiments. Procedia Eng. 211, 726–735 (2018). https://doi.org/10.1016/j.proeng.2017.12.069
Li, Q., Tang, Z., Fang, Z., Yuan, J.P., Wang, J.H.: Experimental study of the effectiveness of a water mist segment system in blocking fire-induced smoke and heat in mid-scale tunnel tests. Tunn. Undergr. Space Technol. 88, 237–249 (2019). https://doi.org/10.1016/j.tust.2019.03.011
Mehaddi, R., Collin, A., Boulet, P., Acem, Z., Telassamou, J., Becker, S., Demeurie, F., Morel, J.Y.: Use of a water mist for smoke confinement and radiation shielding in case of fire during tunnel construction. Int. J. Therm. Sci. 148, 106–156 (2020). https://doi.org/10.1016/j.ijthermalsci.2019.106156
Fan, C.G., Bu, R.W., **e, X.Q., Zhou, Y.: Full-scale experimental study on water mist fire suppression in a railway tunnel rescue station: temperature distribution characteristics. Process. Saf. Environ. Prot. 146, 396–411 (2021). https://doi.org/10.1016/j.psep.2020.09.019
Thomas, P.H.: Modelling of compartment fires. Fire Saf. J. 5, 181–190 (1983). https://doi.org/10.1016/0379-7112(83)90016-4
Tilley, N., Rauwoens, P., Fauconnier, D., Merci, B.: On the extrapolation of CFD results for smoke and heat control in reduced-scale setups to full scale: atrium configuration. Fire Saf. J. 59, 160–165 (2013). https://doi.org/10.1016/j.firesaf.2013.04.001
Drysdale, D.: An Introduction to Fire Dynamics, pp. 132–138. Wiley, United Kingdom (2011)
Tang, Z., Fang, Z., Sun, J., Beji, T., Merci, B.: Computational fluid dynamics simulations of the impact of a water spray on a fire-induced smoke layer inside a hood. J. Fire Sci. 36, 380–405 (2018). https://doi.org/10.1177/0734904118794844
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This work was supported by the National Key R&D Program of China (Grant No. 2022YFC3801100), and the National Natural Science Foundation of China (NSFC) (Grant No. 51704244).
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Lan, Y. et al. (2024). Numerical Studies on the Heat Insulation and Smoke Control Effect of Water Mist Screen Under Longitudinal Ventilation in Bifurcated Tunnel. In: Li, S. (eds) Computational and Experimental Simulations in Engineering. ICCES 2023. Mechanisms and Machine Science, vol 143. Springer, Cham. https://doi.org/10.1007/978-3-031-42515-8_33
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