Accidental fires result in extensive loss of property, damage to the environment and a large number of fatalities every year. When fuel collects in the form of a pool and burns, it is termed a pool fire. Pool fires may burn in isolation – Non-interacting or as Single Pool Fires (SPFs) – or flames from multiple pool fires may interact with each other and burn in what is termed as Multiple Pool Fires (MPFs). Even as single pool fires (SPFs) are difficult to control, interacting flames due to multiple pool fires (MPFs) are even more difficult to extinguish. Compared to SPF, MPFs tend to have much higher flames and are reported to have extraordinary thermal intensity. Accidental pool fires in warehouses, commercial and residential buildings may interact, giving rise to interacting pool fires (MPFs). The commonly used technique to suppress fires in enclosures such as warehouse, commercial or residential buildings is to use sprinklers. Hence, this study reports the numerical simulations performed to analyse the effectiveness of water-mist sprinklers in extinguishing MPFs. The related CFD coding and simulations were performed using Fire Dynamics Simulator (FDS), FDS tools like Pyrosim (pre-processor) and Smokeview (post-processor) packages. The effect of the ratio of the separation distance between the pools (S) to the diameter (D) on the overall fire suppression efficiency of the water-mist sprinkler as a function of the water mist flow rate, the height of the ceiling, and sprinkler particle size are vigorously analysed in this work. The analysis presented in this article will mainly help to resolve problems associated with the effectiveness of mist-sprinkler in warehouse fires regarding process safety viewpoint.

每年，意外火灾都会导致大量财产损失、环境破坏和大量死亡。当燃料以水池的形式聚集并燃烧时，称为水池火灾。池火可能会单独燃烧——非相互作用或作为单一池火 (SPF)——或者来自多个池火的火焰可能相互相互作用并以所谓的多池火 (MPF) 形式燃烧。即使单池火灾 (SPF) 难以控制，多池火灾 (MPF) 导致的相互作用火焰也更难以扑灭。与 SPF 相比，MPF 往往具有更高的火焰，据报道具有非凡的热强度。仓库、商业和住宅建筑中的意外水池火灾可能会相互影响，从而导致相互影响的水池火灾 (MPF)。在仓库、商业或住宅建筑等围墙中灭火的常用技术是使用洒水器。因此，本研究报告了为分析细水雾喷头在扑灭 MPF 中的有效性而进行的数值模拟。相关的 CFD 编码和模拟是使用 Fire Dynamics Simulator (FDS)、Pyrosim（预处理器）和 Smokeview（后处理器）包等 FDS 工具执行的。水池间距（S）与直径（D）之比对细水雾喷头整体灭火效率的影响，作为细水雾流量、顶棚高度和在这项工作中大力分析了喷水器的粒径。