...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Characterization of PF flames under different swirl conditions based on visualization systems
【24h】

Characterization of PF flames under different swirl conditions based on visualization systems

机译：基于可视化系统的不同旋流条件下的PF火焰表征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The complex phenomena underlying reacting flows are at present an active research topic for improving efficiency and control of industrial combustion processes. The present study assesses the use of a reliable and low cost visualization system based on CCD (charged couple device) technology for the identification of different flame states as a function of swirl number. The experiments were performed in a 500 kWth pulverized coal (PF) swirl burner. The visualization system was previously used for similar analysis of an atmospheric gas swirl burner of 50 kWth. Both flames were analyzed under low and high swirl conditions in order to identify possible common features concerning swirl flames. The analysis procedure proposed in this work extracts different statistical and spectral parameters from the intensity of radiation stored by each CCD element. The representation of flame features as two-dimensional distributions has led to the identification of typical structures in swirl flows and has allowed us to detect changes in flame structure as swirl number increases. Besides, the quantification of aforementioned parameters has led to relevant findings concerning frequency analysis and flame stability as a function of swirl. Specifically, results show that the characteristic frequency in terms of flame flicker is sensible to changes in swirl conditions.
机译：反应流背后的复杂现象是当前提高工业燃烧过程效率和控制的活跃研究主题。本研究评估了基于CCD（电荷耦合器件）技术的可靠且低成本的可视化系统的使用，该系统用于识别作为旋流数函数的不同火焰状态。实验是在500 kWth的粉煤（PF）旋流燃烧器中进行的。可视化系统以前曾用于50 kWth的大气旋流燃烧器的类似分析。为了确定与旋流火焰有关的可能的共同特征，在低和高旋流条件下对两种火焰进行了分析。在这项工作中提出的分析程序从每个CCD元件存储的辐射强度中提取出不同的统计和光谱参数。将火焰特征表示为二维分布可以识别旋流中的典型结构，并允许我们检测旋流数增加时火焰结构的变化。此外，前述参数的量化已经导致有关频率分析和作为涡旋函数的火焰稳定性的相关发现。具体而言，结果表明，关于火焰闪烁的特征频率对于涡旋条件的变化是敏感的。

著录项

  • 来源
    《Fuel》 |2013年第11期|798-809|共12页
  • 作者

    A. Gonzalez-Cencerrado; A. Gil; B. Pena;

  • 作者单位

    Centre of Research for Energy Resources and Consumption (CIRCE), C/Mariano Esquillor Gomez, 15, 50018 Zaragoza, Spain;

    Centre of Research for Energy Resources and Consumption (CIRCE), C/Mariano Esquillor Gomez, 15, 50018 Zaragoza, Spain;

    Centre of Research for Energy Resources and Consumption (CIRCE), C/Mariano Esquillor Gomez, 15, 50018 Zaragoza, Spain;

  • 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

    Swirl; Image processing; CCD camera; Pulverized coal; Gas flame;

    机译：漩涡;图像处理;CCD相机煤粉气体火焰;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号