利用层次分析法和量纲分析法建立了半物理的壁面热蚀痕迹的预测模型,并将模型嵌入FDS源程序,实现对火灾过程中壁面热蚀痕迹的再现计算,扩展了火灾动力学仿真模拟软件的计算功能及显示功能。通过对壁面热蚀痕迹的数值重构,可以分析壁面热蚀痕迹的发展特征,初步论证了使用该方法对火灾调查提供理论依据的可行性和重大意义。 Hierarchical analysis and dimensional analysis were used to establish a semi-physical prediction model of wall thermal eclipse traces. The model was embedded in FDS source code to realize the reconstruction of wall thermal eclipse traces in fire process, and extended the simulation of fire dynamics Software calculation and display functions. Through the numerical reconstruction of the thermal erosion traces on the wall, the development characteristics of the thermal corrosion traces on the wall can be analyzed, and the feasibility and significance of using this method to provide a theoretical basis for the fire investigation are preliminarily demonstrated.