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仪器网/ 行业应用/ 解决方案/ 湍流火焰中热释放速率的测量

湍流火焰中热释放速率的测量

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In this work, we report on the direct measurement of heat release rates via
simultaneous laser-induced fluorescence of OH and CH2O radicals using planar laserinduced
fluorescence (PLIF). The product of the two images is shown to correlate
with the forward production rate of the HCO radical, which in turn has been found to
correlate well with heat release rates in premixed hydrocarbon flames. Heat release
rate measurements were also taken with OH* for comparisons with the results from
the laser-based technique. The measurements were made in a lean turbulent premixed
flame subject to acoustic forcing; this flame mimics the instabilities encountered in
lean premixed pre-vaporized combustors (LPP). As the scheme is based on probing
radical species that participate in the major heat release reactions, it is the closest nonintrusive
measure of heat release rate currently available and thus presents a very
useful diagnostic tool in combustion research. PLIF平面激光诱导荧光火焰燃烧检测系统
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