Spatially and temporally resolved laser/optical diagnostics of combustion processes: From fundamentals to practical applications

被引:32
作者
Alden, Marcus [1 ]
机构
[1] Lund Univ, Div Combust Phys, POB 118, S-22100 Lund, Sweden
基金
瑞典研究理事会;
关键词
LASER-INDUCED FLUORESCENCE; SURFACE-TEMPERATURE MEASUREMENTS; INDUCED STIMULATED-EMISSION; RECYCLABLE METAL FUELS; GAS-PHASE THERMOMETRY; IN-SITU DETECTION; ATOMIC OXYGEN; RAMAN-SCATTERING; SINGLE-SHOT; INTERFERENCE-FREE;
D O I
10.1016/j.proci.2022.06.020
中图分类号
O414.1 [热力学];
学科分类号
摘要
Laser diagnostic techniques have for more than five decades been used for gaining a deepened under-standing of various combustion processes. The main reason for this is the possibility of non-intrusive mea-surements of key combustion parameters, e.g. species concentrations, temperatures and velocities, with high spatial and temporal resolution. The present paper will describe some development of the techniques them-selves, followed by applications of relevant diagnostic techniques for studies of combustion phenomena and then more applied activities often related to challenges in an industrial environment. The paper is not meant to be a complete review of the entire research field but rather a survey with a majority of the contributions from the author's laboratory. After a short introduction and background (in-cluding some historical remarks), some common laser diagnostic techniques will be briefly described. Then some emerging techniques will be described. The first such area to be covered will highlight the use and application of structured illumination through Frequency Recognition Algorithm for Multiple Exposures, FRAME, enabling high speed visualization, 3D imaging and multiple species detection using one standard laser/detector. Furthermore, single ended diagnostics using Scheimpflug LIDAR and backward lasing using short pulse Stimulated Emission will be described and exemplified. In the category of studies of combustion phenomena, the paper will focus on diagnostic challenges and applications when studying combustion of some renewable fuels; solid biomass, ammonia and metals. When studying these fuels, often species not so commonly encountered when using fossil fuels are of interest, e.g. alkali containing species, e.g. KOH, KCl as well as nitrogen bound species, e.g. NH, NH2. In the field of applied diagnostics, preferably in an industrial environment, examples will be given from IC engines, gas turbines as well as full-scale industrial furnaces. In these phenomenological and industrial applications laser-induced fluorescence, Raman scattering and thermographic phosphorescence were mainly utilized, with some examples of photo-fragmentation LIF as well as non-liner techniques, IR-DFWM and CARS. The paper is concluded with a summary and some thoughts about the future. & COPY; 2022 The Author. Published by Elsevier Inc. on behalf of The Combustion Institute. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )
引用
收藏
页码:1185 / 1228
页数:44
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