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首页> 外文期刊>Fortschritt-Berichte VDI, Reihe 6. Energietechnik >Experiments for the Validation of Large Eddy Simulations: Turbulence-Flame Interactions in Extinguishing Turbulent Opposed Jet Flames
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Experiments for the Validation of Large Eddy Simulations: Turbulence-Flame Interactions in Extinguishing Turbulent Opposed Jet Flames

机译：验证大型涡流模拟的实验：扑灭湍流的对置射流火焰中的湍流-火焰相互作用

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摘要

This work provides a comprehensive experimental database of a simplified benchmark flame, to validate turbulence-chemistry interaction models Data of the spatial structure and dynamics of the turbulent flow field of stable and extinguishing, partially premixed, opposed jet flames, as well as the inflow conditions, are provided in order to validate predictions of flame extinction, obtained by LES. Particle image velocimetry is used to capture the flow field and planar laser induced fluorescence to mark the flame. The simultaneous use of both techniques allows to measure the flow field from the flames perspective. Conditional flow field statistics are provided with high spatial resolutions in a time uncorrelated manner at 1 Hz. The complementary use of high speed laser diagnostics at 5 kHz allows tracking the evolution of extinction in real time. A new multidimensional conditioning scheme is introduced in order to compare the individual and random transient events of extinction in a meaningful statistical manner without smearing important spatiotemporal information.
机译：这项工作提供了简化基准火焰的全面实验数据库，以验证湍流-化学相互作用模型稳定和扑灭，部分预混合，对置射流火焰的湍流场的空间结构和动力学数据以及流入条件提供，以验证由LES获得的火焰熄灭的预测。粒子图像测速仪用于捕获流场，平面激光诱导的荧光标记火焰。两种技术的同时使用可以从火焰角度测量流场。有条件的流场​​统计以1 Hz的时间不相关的方式具有高空间分辨率。补充使用5 kHz高速激光诊断程序，可以实时跟踪灭绝的进展。引入了一种新的多维条件方案，以便以有意义的统计方式比较灭绝事件的个体事件和随机事件，而不会抹掉重要的时空信息。

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