用化学发光法研究煤油/空气两相火焰的放热率

IF 1.7 4区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of Propulsion and Power Pub Date : 2023-07-01 DOI:10.2514/1.b38851

Anthony Desclaux, M. Orain, J. Garaud, V. Bodoc, P. Gajan

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引用次数: 0

摘要

开发了一种基于化学发光测量的实验方法来确定煤油/空气两相流火焰产生的热释放速率。已知该量与空气质量流量和当量比成比例。在航空燃烧室中使用的液体燃料喷射器的下游进行了实验研究。在稳态火焰结构中，分析了不同空气质量流量和0.4至0.71当量比的火焰化学发光光谱。首先评估由[公式：见正文]发射（其中[公式：参见正文]表示电子激发的物质）和烟尘辐射引起的宽带背景发射。然后，对[公式：见正文]、[公式：见图正文]和[公式：看正文]的化学发光发射的分析表明，[公式：见正文]可用于确定瞬时当量比和空气质量流速。给出了一个应用该方法测量火焰声激励引起的热释放率波动的例子。

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Heat Release Rate from a Two-Phase Kerosene/Air Flame Using Chemiluminescence

An experimental method based on chemiluminescent measurements is developed to determine the heat release rate produced by a two-phase flow kerosene/air flame. This quantity is known to be proportional to the air mass flow rate and the equivalence ratio. Experimental studies are carried out downstream of a liquid fuel injector used in aeronautical combustion chambers. The chemiluminescent spectra of the flame are analyzed for different air mass flow rates and equivalence ratios ranging from 0.4 to 0.71 in the steady-state flame configuration. The broadband background emission due to [Formula: see text] emission (where [Formula: see text] indicates an electronically excited specie) and soot radiation is first evaluated. Then, the analysis of the chemiluminescent emission from [Formula: see text], [Formula: see text], and [Formula: see text] indicates that the [Formula: see text] may be used to determine both the instantaneous equivalence ratio and the air mass flow rate. An example of the application of this method to measure fluctuations in the heat release rate induced by acoustic excitation of the flame is shown.

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来源期刊

Journal of Propulsion and Power 工程技术-工程：宇航

CiteScore

4.20

自引率

21.10%

发文量

审稿时长

6.5 months

期刊介绍： This Journal is devoted to the advancement of the science and technology of aerospace propulsion and power through the dissemination of original archival papers contributing to advancements in airbreathing, electric, and advanced propulsion; solid and liquid rockets; fuels and propellants; power generation and conversion for aerospace vehicles; and the application of aerospace science and technology to terrestrial energy devices and systems. It is intended to provide readers of the Journal, with primary interests in propulsion and power, access to papers spanning the range from research through development to applications. Papers in these disciplines and the sciences of combustion, fluid mechanics, and solid mechanics as directly related to propulsion and power are solicited.