Discussion of laser interferometric vibrometry for the determination of heat release fluctuations in an unconfined swirl-stabilized flame
Discussion of laser interferometric vibrometry for the determination of heat release fluctuations in an unconfined swirl-stabilized flame
复制标题
激光干涉测振法测定无侧限涡流稳定火焰中放热波动的讨论
DOI:
10.1016/j.combustflame.2018.12.019
复制
发表时间:
2019
影响因子:
4.4
通讯作者:
J. Czarske
中科院分区:
文献类型:
--
作者:
F. Greiffenhagen;J. Peterleithner;J. Woisetschläger;A. Fischer;J. Gürtler;J. Czarske
Fluctuations in heat release, hot and cold spots convected by the flow and sound waves are all related to density fluctuations, a number easily detected by interferometry. Same as chemiluminescence, interferometry is a line-of-sight method and therefore needs optical access and tomographic reconstruction of density fields. In this work we discuss the use of Laser Interferometric Vibrometry (LIV) as an alternative or extension to chemiluminescence when detecting heat release fluctuations in the flame, convection of hot and cold spots in the non-reacting flow field and sound waves emitted from a 3.4 kW turbulent, unconfined swirl-stabilized methane/air flame under perfectly premixed conditions. For this discussion local temperatures, local ratios of heat release and local Gladstone-Dale constants are determined and their influence on the result discussed. Global and local fluctuations in heat release rate recorded by LIV and chemiluminescence are compared, resulting in the same global values if local temperature fields and local equivalence ratios are used for LIV data evaluation. In contrast, local fluctuations in OH* chemiluminescence emission are influenced by turbulence and strain in this type of flame.
登录
查看更多内容
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Johannes Peterleithner;Nicolai V. Stadlmair;J. Woisetschläger;T. Sattelmayer
通讯作者:
T. Sattelmayer
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Stefan Köberl;Fabrizio Fontaneto;Fabrice Giuliani;Jakob Woisetschläger
通讯作者:
Jakob Woisetschläger
影响因子:
2.4
作者:
A. Fischer;J. König;J. Czarske;Johannes Peterleithner;J. Woisetschläger;Thomas Leitgeb
通讯作者:
Thomas Leitgeb
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Johannes Peterleithner;Florian Salcher;J. Woisetschläger
通讯作者:
J. Woisetschläger
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Johannes Peterleithner;Riccardo Basso;F. Heitmeir;J. Woisetschläger;Raimund Schlüßler;J. Czarske;A. Fischer
通讯作者:
A. Fischer