Optimization of the mode of outlet conditions for opposed spiral firing burners

LI Xinhao; WANG Chunbo; GUO Yongcheng; ZOU Chan

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Optimization of the mode of outlet conditions for opposed spiral firing burners

Thermal Power Generation Issue 4, (2017)

更新时间：2025-09-28

- Optimization of the mode of outlet conditions for opposed spiral firing burners
- 作者机构：
  
  华北电力大学能源动力与机械工程学院,河北,保定,071003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.23
- Published Online：26 April 2017，
  
  Published：2017
- 稿件说明：
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LI Xinhao, WANG Chunbo, GUO Yongcheng, et al. Optimization of the mode of outlet conditions for opposed spiral firing burners[J]. Thermal Power Generation, 2017, (4).
DOI：

LI Xinhao, WANG Chunbo, GUO Yongcheng, et al. Optimization of the mode of outlet conditions for opposed spiral firing burners[J]. Thermal Power Generation, 2017, (4). DOI：

摘要

目前旋流对冲燃烧锅炉数值模拟的方法主要有2种：传统方法1是将燃烧器简化为小段圆台，人为给定某个旋流强度；传统方法2是将全部燃烧器和炉膛作为一个整体进行模拟计算。本文在总结上述2种方法优缺点的基础上，提出了“分段建模，无差过渡”的新方法。该方法是将单只燃烧器出口模拟结果调整后作为全炉膛模拟的入口条件，两者的无差过渡通过ANSYS Fluent软件中“边界profile”的自定义编辑实现，解决了传统方法单只燃烧器到炉膛速度过渡、左右旋过渡和煤粉浓度过渡3个难题。对2种传统方法与新方法进行了冷态模拟比较，并采用新方法对炉膛全尺寸进行了热态模拟。结果表明，新方法既可以保证燃烧器不损失细节特征，又极大地减少炉膛网格数量，在计算量减小的情况下使得准确性得到了保证。

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