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首页> 外文期刊>International Journal of Heat and Mass Transfer >Assessment of simplified thermal radiation models for engineering calculations in natural gas-fired furnace
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Assessment of simplified thermal radiation models for engineering calculations in natural gas-fired furnace

机译：评估简化的热辐射模型，用于天然气炉的工程计算

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The paper assesses the significance of thermal radiation in turbulent non-premixed natural gas flames confined in axisymmetric furnaces. The in-house developed computational model includes simulation of the turbulent flow characteristics, the controlling mixing and chemical mechanisms as well as radiation modeled via the six-flux and of the P-1 models. A variable absorption coefficient is taken into account for the gaseous combustion mixture based on temperature and composition of the mixture. The results with and without radiation are evaluated as part of the complete prediction procedure involving flow, combustion, convection, and radiation phenomena. The comparative assessment of the two radiation models against experimental data indicates that they can be easily applied in engineering cases, with the P-1 model yielding more accurate results in the case considered.
机译：本文评估了在轴对称炉中局限的湍流非预混天然气火焰中热辐射的重要性。内部开发的计算模型包括湍流特性的仿真，控制混合和化学机理以及通过六通量和P-1模型进行的辐射建模。基于混合物的温度和组成，对于气体燃烧混合物考虑可变的吸收系数。在涉及流动，燃烧，对流和辐射现象的完整预测过程中，将评估有无辐射的结果。对两种辐射模型与实验数据的比较评估表明，它们可以轻松地应用于工程案例，而P-1模型在所考虑的案例中得出的结果更为准确。

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