可视化隧道火灾仿真系统开发

A Visual Simulation System for Tunnel Fire

FDS(Fire Dynamics Simulator)作为一种高效的火灾模拟软件,前处理操作集中在一个data文本文件中,需要操作人员熟知各输入数据参数的格式,而且在对非规则边界隧道进行火灾模拟时有很大局限性。为了简化操作,实现非规则边界隧道的建模,通过应用一种由矩形方块拟合圆弧墙或斜线墙的算法来实现非规则边界隧道建模,并通过实现与DXF文件的接口来简化建模过程,大大改善了软件的可操作性能;最后给出了用该软件对非矩形边界隧道火灾的数值模拟应用。通过编制可视化软件并集成了非规则边界隧道建模算法,简化了隧道火灾仿真的建模操作,可以很好地解决隧道火灾仿真问题。

As an efficient fire dynamics simulator, the preprocessor of FDS is in a data file. It requires the operator to know the format of input parameter, and is limited to rectangular block. To simplify the operation, this paper applies a simple algorithm to fit the non - rectangular tunnel wall with rectangular blocks. The modeling process is simplified by importing DXF file. At last a numerical simulation of the tunnel fire with non - rectangular wall using this visual software is given to verify the reliability of the system. Through developing a visual software including all the functions of FDS, the modeling of non - rectangular wall is achieved, and the performance of FDS is improved.