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仪器网/ 行业应用/ 解决方案/ 高压(160 bar)火焰中氮氧化物激光诱导荧光成像定量测量

高压(160 bar)火焰中氮氧化物激光诱导荧光成像定量测量

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Nitric oxide laser-induced-fluorescence (NO-LIF) 2-D imaging measurements using a new multi-spectral
detection strategy are reported for high-pressure flames (160 bar). This work builds on previous
research that identified interference LIF from O2 and CO2 in high-pressure flames and optimized the choice
of excitation strategies as a function of application conditions. In this study, design rules are presented to
optimize the LIF detection wavelengths for quantitative 2-D NO-LIF measurements over a wide range of
pressures (160 bar) and temperatures. Simultaneous detection of LIF in multiple wavelength regions
enables correction of the NO signal for interference from O2 and CO2 and allows simultaneous imaging
of all three species. New experiments of wavelength-resolved 1-D LIF in slightly lean (/ = 0.9) and slightly
rich (/ = 1.1) methane/air flames are used to evaluate the design rules and estimate the NO detection limits
for a wide range of flame conditions. The quantitative 2-D measurements of NO in the burnt gas are compared
with model calculations (using GRI-Mech 3.0) versus pressure for slightly lean and slightly rich
flames. The discussions and demonstrations reported in this study provide a practical guideline for application
of instantaneous 1-D or 2-D NO-LIF imaging strategies in high-pressure combustion systems. PLIF平面激光诱导荧光火焰燃烧检测系统 时间分辨平面激光诱导荧光测量系统 德国LaVision PIV/PLIF粒子成像测速场仪
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