STRUCTURE AND DYNAMICS OF CRYOGENIC FLAMES AT SUPERCRITICAL PRESSURE
STRUCTURE AND DYNAMICS OF CRYOGENIC FLAMES AT SUPERCRITICAL PRESSURE
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DOI：
10.1080/00102200500292530
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发表时间：
2006-01
影响因子：
1.9
通讯作者：
S. Candel;M. Juniper;G. Singla;P. Scouflaire;C. Rolon
中科院分区：
文献类型：
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作者：
S. Candel;M. Juniper;G. Singla;P. Scouflaire;C. Rolon
为了改进和提高推进系统的可靠性，有必要详细了解液体推进剂的燃烧过程。本文介绍了旨在为燃烧部件的设计和工程提供这样的基本依据的实验研究。它报告了成像技术在高压低温燃烧中的最新应用。在压力超过氧的临界压力（p > pc（O2 = 5.04MPa）），但注入液氧的温度低于其临界值的跨临界范围内，研究了火焰结构。从OH* 自由基发射，CH* 自由基发射的LOX/GCH 4火焰和背光的情况下的成像获得的数据提供了一组注射条件下的火焰结构的详细视图。这些数据可用于指导跨临界火焰的数值模拟和稳定过程的理论和数值分析。火焰边缘的计算被用来说明这方面。所获得的结果也可用于设计工程建模工具和方法，以提高效率和增强可靠性为目标的组件开发。
ABSTRACT A detailed understanding of liquid propellant combustion is necessary for the development of improved and more reliable propulsion systems. This article describes experimental investigations aimed at providing such a fundamental basis for design and engineering of combustion components. It reports recent applications of imaging techniques to cryogenic combustion at high pressure. The flame structure is investigated in the transcritical range where the pressure exceeds the critical pressure of oxygen (p > p c (O2 = 5.04MPa)) but the temperature of the injected liquid oxygen is below its critical value . Data obtained from imaging of OH* radicals emission, CH* radicals emission in the case of LOx/GCH4 flames and backlighting provide a detailed view of the flame structure for a set of injection conditions. The data may be used to guide numerical modelling of transcritical flames and the theoretical and numerical analysis of the stabilization process. Calculations of the flame edge are used to illustrate this aspect. Results obtained may also be employed to devise engineering modelling tools and methodologies for component development aimed at improved efficiency and augmented reliability.