火焰周边扰流脱火效能的图像分析技术

摘要

脱火现象的分析研究是喷射火灾脱火法施救等诸多技术的重要基础.论文提出并较为深入地研究了火焰周边扰动气流脱火效能的图像分析技术.详细阐述了技术思想,分析了图像的获取及其信息的处理过程,建立了求解表征扰流脱火效能的火焰脱开距离数学模型,并通过专门设计的实验,初步验证了这一分析技术的可行性,为脱火现象的分析研究提供了重要的技术基础.%As the research about lift-off fire is the foundation of lift-off extinguishing against jet fire, the calculative method based on image parameters was proposed for studying the fire lift-off capability of perturbation flow surrounding flame. Firstly, the calculative method was explained. Then, the image acquisition and processing were introduced, and the mathematic model was established to calculate the lift-off distance, which represented the fire lift-off capability of the flow. Finally, the experiment was designed and the feasibility of the method was validated.