Christensen Angi M, Icove David J
U.S. Tennessee Valley Authority Police, 400 W. Summit Hill Dr., WT-3D, Knoxville, TN, USA.
J Forensic Sci. 2004 Jan;49(1):104-7.
A case is reported in which computer fire modeling was used to reevaluate a fire that killed three fire fighters. NIST's Fire Dynamics Simulator (FDS) was employed to model the fire in order to estimate the concentration of carbon monoxide present in the dwelling, which was the immediate cause of death of two of the fire fighters, who appear to have removed their face pieces in order to share available air. This estimate, along with an assumed respiration volume and known blood carboxyhemoglobin, was plugged into a standard equation to estimate the time of exposure. The model indicated that 27 min into the fire, the carbon monoxide concentration had already reached approximately 3600 ppm. At this concentration, and a respiration of 70 L/min, an estimated 3 to 8 min of exposure would have been required to accumulate the concentrations of carboxyhemoglobin (49, 44, and 10%) measured on the fire fighters at autopsy.
报道了一个案例，其中利用计算机火灾模型对一场导致三名消防员死亡的火灾进行重新评估。美国国家标准与技术研究院（NIST）的火灾动力学模拟器（FDS）被用于对火灾进行建模，以估算住宅内一氧化碳的浓度，这是两名消防员的直接死因，他们似乎摘掉了面罩以共享可用空气。将该估算值与假定的呼吸量及已知的血液碳氧血红蛋白值代入一个标准方程，以估算暴露时间。模型显示，火灾发生27分钟时，一氧化碳浓度已达到约3600 ppm。在此浓度下，呼吸频率为70升/分钟，据估计，尸检时在消防员身上测得的碳氧血红蛋白浓度（49%、44%和10%）需要3至8分钟的暴露时间才能积累起来。
