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On modelling combustion, radiation and soot processes in compartment fires

机译:模拟车厢火灾中的燃烧,辐射和烟尘过程

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摘要

A Reynolds-Averaging-Navier-Stokes Computational-Fluid-Dynamics-based fire model is developed to solve a turbulent buoyant fire in a single-, two- and multi-compartment structure. The model is evaluated as part of a complete prediction procedure involving the modelling of the simultaneously occurring flow, convection, combustion, soot generation and burnout and radiation phenomena. Computational results are compared against available experimental data. Proper handling of the fire chemistry through combustion models such as eddy break-up and laminar flamelet is important to modelling compartment fires. Thermal radiation plays a significant role too. Soot radiation has shown to significantly improve the accuracy of the model predictions.
机译:建立了基于雷诺-平均-Navier-斯托克斯计算流体动力学的火灾模型,以解决单室,两室和多室结构中的湍流浮力火灾。该模型将作为完整预测程序的一部分进行评估,该过程涉及对同时发生的流动,对流,燃烧,烟灰生成以及燃尽和辐射现象进行建模。将计算结果与可用的实验数据进行比较。通过燃烧模型(如涡流破裂和层流小火焰)正确处理火灾化学物质对于模拟车厢火灾很重要。热辐射也起着重要作用。烟尘辐射已显示可以显着提高模型预测的准确性。

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