外界风作用下窗口外部燃烧火焰高度

摘要

By small size combustion room,the flame height under external wind with different windows size was measured.Based on the theory of rectangle fire resources without wind,the flame height under external wind was analyzed considering the entrainment velocity,and the flame height correction factor was introduced to describe the influence of external wind on flame height.The equation of the non-dimensional flame height was put forward.The correction coefficient could be calculated based on the experiments data and the correction model could fit the experiments well.%采用小尺寸燃烧房,在不同窗口尺寸下测量外界风作用下的窗口处的外部火焰高度.基于无风条件下的窗口矩形火源理论,通过卷吸速率分析外界风作用下的外部火焰高度,并使用火焰高度的修正因子表述外界风对外部火焰高度的影响,提出火焰高度的无量纲表达形式.修正系数可结合实验数据计算得出,修正模型拟合度较好.