首页> 外文学位 >Numerical simulation of thermoacoustic response of laboratory scale premixed multi-slit burner flames.
【24h】

Numerical simulation of thermoacoustic response of laboratory scale premixed multi-slit burner flames.

机译:实验室规模的预混多缝燃烧器火焰热声响应的数值模拟。

获取原文
获取原文并翻译 | 示例

摘要

Thermoacoustic instabilities are an entirely unwanted, yet nearly inevitable phenomenon occurring in many practical premixed combustors. If not properly accounted and designed for, they can incur significant increases in the development combustion systems. The fact that such unexpected issues are encountered is indicative of a fundamental lack of understanding regarding the mechanisms that drive thermoacoustic phenomena.;Numerical techniques are used to characterize the thermoacoustic response of premixed multi-slit bunsen burner flames. A symmetrical representation of the multi-slit burner is used, and the transfer function is computed at several different frequencies and at three different equivalence ratios. The numerical results are then compared against experimental results in order to determine the suitability of numerical techniques for studying thermoacoustics. A fully compressible Navier-Stokes combustion solver is used in conjunction with adaptive mesh refinement (AMR) for improved resolution at the flame interface.
机译:热声不稳定性是在许多实际的预混燃烧器中发生的完全不希望的但几乎不可避免的现象。如果不适当地考虑和设计,它们会导致燃烧系统的显着增加。遇到此类意外问题的事实表明对驱动热声现象的机理基本缺乏了解。数值技术用于表征预混多缝本生灯燃烧器火焰的热声响应。使用多缝燃烧器的对称表示,并以几种不同的频率和三种不同的当量比来计算传递函数。然后将数值结果与实验结果进行比较,以确定数值技术用于研究热声学的适用性。完全可压缩的Navier-Stokes燃烧求解器与自适应网格细化(AMR)结合使用,以改善火焰界面处的分辨率。

著录项

  • 作者

    O'Brien, Adam.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Aerospace engineering.;Acoustics.
  • 学位 M.A.S.
  • 年度 2015
  • 页码 100 p.
  • 总页数 100
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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