• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>AIAA/ASME/SAE/ASEE joint propulsion conference exhibit >The impact of periodical flow forcing on the mixing quality and flow structure in a swirl burner: numerical and experimental studies
【24h】

The impact of periodical flow forcing on the mixing quality and flow structure in a swirl burner: numerical and experimental studies

机译：周期性流动强迫对旋流燃烧器混合质量和流动结构的影响：数值和实验研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, the periodical excitation of the now field of a swirl burner and its impact on coherent flow structures and mixing behavior is examined. Manipulating the mixing behavior and/or the flow structure of a combustor allows to control combustion instabilities and to reduce pollutant emissions. The investigations are conducted with unsteady RANS simulations and experimental measurements in a water test rig for cold flow configurations. Studies on axial mass flow excitations with the dominant frequency of the coherent structure are performed. The unforced flow field exhibits a helical structure which switches to an axis-symmetric one when forcing at the natural frequency is applied. The concentration field at the burner exit becomes more homogeneous, i.e. the mixing quality increases, with forcing. The simulations are able to reproduce the main features of the influence of forcing on mixing characteristics and flow structure.
机译：本文研究了旋流燃烧器电流场的周期性激励及其对相干流结构和混合行为的影响。操纵燃烧器的混合行为和/或流动结构允许控制燃烧的不稳定性并减少污染物的排放。在不稳定的RANS模拟和水冷试验台中的实验测量中进行了研究。以相干结构的主导频率对轴向质量流激励进行了研究。无力流场呈现出一种螺旋结构，当施加固有频率时，该螺旋结构会切换为轴对称。燃烧器出口处的浓度场变得更加均匀，即随着强迫，混合质量提高。模拟能够重现强迫对混合特性和流动结构的影响的主要特征。

著录项

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