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首页> 外文期刊>Energy Conversion & Management >Evaluation of gas radiation models in CFD modeling of oxy-combustion
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Evaluation of gas radiation models in CFD modeling of oxy-combustion

机译：氧燃烧CFD建模中气体辐射模型的评估

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摘要

Proper determination of the radiation energy is very important for proper predictions of the combustion characteristics inside combustion devices using CFD modeling. For this purpose, different gas radiation models were developed and applied in the present work. These radiation models vary in their accuracy and complexity according to the application. In this work, a CFD model for a typical industrial water tube boiler was developed, considering three different combustion environments. The combustion environments are air-fuel combustion (21% O_2 and 79% N_2), oxy-fuel combustion (21% O_2 and 79% CO_2) and oxy-fuel combustion (27% O_2 and 73% CO_2). Simple grey gas (SGG), exponential wide band model (EWBM), Leckner, Perry and weighted sum of grey gases (WSGG) radiation models were examined and their influences on the combustion characteristics were evaluated. Among those radiation models, the EWBM was found to provide close results to the experimental data for the present boiler combustion application. The oxy-fuel combustion characteristics were analyzed and compared with those of air-fuel combustion.
机译：正确确定辐射能对于使用CFD建模正确预测燃烧装置内部燃烧特性非常重要。为此，开发了不同的气体辐射模型并将其应用到当前工作中。这些辐射模型的准确性和复杂性根据应用而有所不同。在这项工作中，考虑了三种不同的燃烧环境，针对典型的工业水管锅炉开发了CFD模型。燃烧环境为：空气燃料燃烧（21％O_2和79％N_2），氧燃料燃烧（21％O_2和79％CO_2）和氧燃料燃烧（27％O_2和73％CO_2）。研究了简单的灰气体（SGG），指数宽带模型（EWBM），Leckner，Perry和灰气体加权总和（WSGG）辐射模型，并评估了它们对燃烧特性的影响。在这些辐射模型中，发现EWBM与当前锅炉燃烧应用的实验数据提供了接近的结果。分析了氧燃料的燃烧特性，并与空气燃料的燃烧特性进行了比较。

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  • 来源
    《Energy Conversion & Management》 |2014年第5期|83-97|共15页
  • 作者

    M.A. Rajhi; R. Ben-Mansour; M.A. Habib; M.A. Nemitallah; K. Andersson;

  • 作者单位

    Mechanical Engineering Departments, KFUPM, Dhahran 31261, Saudi Arabia;

    Mechanical Engineering Departments, KFUPM, Dhahran 31261, Saudi Arabia;

    Mechanical Engineering Departments, KFUPM, Dhahran 31261, Saudi Arabia;

    Mechanical Engineering Departments, KFUPM, Dhahran 31261, Saudi Arabia,Mechanical Engineering Department, Massachusetts Institute of Technology, 77 Mass Avenue, Cambridge, USA;

    Department of Energy and Environment, Energy Technology, Chalmers University of Technology, SE-412 96 Goteborg, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gas radiation models; Oxy-fuel combustion; Air combustion; Computational fluid dynamics (CFD);

    机译：气体辐射模型;含氧燃料燃烧;空气燃烧;计算流体动力学（CFD）;

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