• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optics Letters >Demonstration of a two-line Kr PLIF thermometry technique for gaseous combustion applications
【24h】

Demonstration of a two-line Kr PLIF thermometry technique for gaseous combustion applications

机译：用于气态燃烧应用的双线KR PLIF高温技术的演示

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

Experiments were performed to demonstrate a dual-wavelength excitation krypton planar laser-induced fluorescence (Kr PLIF)-based 2D temperature imaging technique in a laminar non-sooting CH4/N-2 diffusion flame. The technique exploits the thermochemical dependence of the overlap integral arising from Kr absorption and excitation laser spectra to yield the temperature without the need to know the local mixture composition. The choice of the two excitation wavelengths is made using the knowledge of the fuel mixture and pressure. The two excitation wavelengths lie within the same 4p(6)S(0)(1) - - 5p[3/2](2) transition, and their selection is informed such that the resulting Kr PLIF signal ratio depends primarily on the temperature and negligibly on local composition. Mean temperature fields show excellent agreement when compared to Fluent simulations across different regions of the combustion domain, while the single-shot temperature field exhibits slightly degraded accuracy. Overall, the technique provides very similar figures of merit compared to conventional composition-dependent thermometry approaches and showcases a promising scope for application in complex reacting flows. (C) 2019 Optical Society of America
机译：进行实验以证明双波长激发氪平平面激光诱导的荧光（KR PLIF）在层状非烟灰CH4 / N-2扩散火焰中的基于2D温度成像技术。该技术利用KR吸收和激发激光光谱产生的重叠积分的热化学依赖性，以产生温度而无需了解局部混合物组合物。使用燃料混合物和压力的知识进行两种激发波长的选择。两个激发波长位于相同的4P（6）（0）（1） - ＆ - ＆ 5P [3/2]（2）转换，并通知其选择，使得所得的KR PLIF信号比主要取决于温度和局部组成上的温度。与燃烧结构域的不同区域的流畅模拟相比，平均温度场显示出良好的一致性，而单次温度场表现出略微降低的精度。总体而言，与传统的组合物依赖性的温度方法相比，该技术提供了非常相似的优点图，并且展示了在复杂的反应流中的应用范围。 （c）2019年光学学会

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