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Modeling and simulation of liquid pool fires with in-depth radiation absorption and heat transfer

机译：具有深度辐射吸收和传热的液池火灾建模与仿真

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In this paper we present a computational fluid dynamics model for predicting the heat release rates of liquid pool fires. The model makes use of the one-dimensional heat transfer solver to provide the liquid surface boundary condition for the gas phase solver. The in-depth radiation transport is solved by a one-dimensional radiation transport model together with effective absorption coefficients determined from experimental data. The model accounts for the convective heat transfer in the liquid phase by modifying the thermal conductivity. The model is implemented as a boundary condition in the fire dynamics simulator (FDS). The model is validated by comparing experimental and predicted evaporation rates for water and a range of hydrocarbon fuels. The sensitivity of the results to the modelling assumptions and model input parameters is studied. The in-depth heat transfer appears to have a significant effect on the fire dynamics, except for the peak burning rates, which depend most importantly on the gas phase combustion. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在本文中，我们提出了一种计算流体动力学模型，用于预测液池火灾的放热率。该模型利用一维传热求解器为气相求解器提供了液面边界条件。通过一维辐射传输模型以及根据实验数据确定的有效吸收系数来解决深度辐射传输。该模型通过修改导热系数解决了液相中的对流传热问题。该模型在火灾动态模拟器（FDS）中作为边界条件实现。通过比较水和一系列碳氢化合物燃料的实验蒸发率和预测蒸发率来验证该模型。研究了结果对建模假设和模型输入参数的敏感性。深度传热似乎对燃烧动力学有重要影响，除了峰值燃烧速率外，峰值燃烧速率最重要地取决于气相燃烧。 （C）2016 Elsevier Ltd.保留所有权利。

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