This work aims to validate numerical modelling of water sprays against experiments carried out in this project. The focus has been on the influence of ventilation on water distributions on the tunnel floor, the influence of water sprays on control of smoke flow, and the modelling of pool fires and crib fires. Besides, full scale tunnel fires with FFFS in tunnels using longitudinal ventilation and point extraction ventilation systems are simulated and compared, as well recommendations for numerical modelling of such scenarios.
The work is a part of the project “Mechanisms and performance of different fixed fire fighting systems (FFFS) in tunnels” funded by Swedish Research Council FORMAS (2019-00521), which is gratefully acknowledged.