Data from: Study on characteristics of fire plume in building facade window under lateral blow

The overflow of the flame plume from the window is the main cause of the vertical spread of the fire on the facade of the building. This paper considers the geometry of the window by taking measures to prevent the flame from propagating along the vertical wall. In this paper, a residential building is taken as an example to evaluate the flame plume characteristics through experimental tests and numerical simulations. The objective of the present study is to study the flame plume characteristics under the air blow on the outer window side of the building. The theoretical equations of the flame tilt angle, non-dimensional temperature and non-dimensional velocity are derived. A series of experimental tests were carried out in a reduced-scale building model corresponding to the changes of lateral blow ventilation velocity. Reduced scale numerical simulations were conducted to verify the experiments. Results showed that the flame tilt angle increases with ventilation velocity increases. Meanwhile, the experimental results were compared with the reduced-scale tests and numerical simulations. These showed a good agreement between experimental results and numerical simulations. All these findings provide theoretical basis for building fire prevention outside window.

火焰羽流（flame plume）从窗口溢出，是建筑外立面火灾竖向蔓延的主要诱因。本文通过采取抑制火焰沿竖向墙体蔓延的防控措施，针对窗口的几何特性开展研究。本文以住宅建筑为研究案例，通过试验测试与数值模拟手段评估火焰羽流特性。本研究的核心目标为探究建筑外窗侧方受吹风作用下的火焰羽流特性，推导得到了火焰倾角、无量纲温度（non-dimensional temperature）与无量纲速度（non-dimensional velocity）的理论计算公式。针对侧向吹风通风风速的变化工况，本研究采用缩尺建筑模型（reduced-scale building model）开展了一系列试验测试，并通过缩尺数值模拟对试验结果进行验证。结果表明，火焰倾角随通风风速的升高而增大；将试验结果与缩尺试验及数值模拟结果对比后发现，试验结果与数值模拟结果吻合度良好。上述研究成果可为建筑外窗防火工作提供理论支撑。