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弹道学报  2015 

超燃冲压发动机燃烧室准一维建模与分析

Keywords: 超燃冲压发动机,燃烧室,双模态,一维模型

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Abstract:

为了研究超燃冲压发动机燃烧室内气流变化规律,通过影响系数法,建立了超燃冲压发动机的准一维模型,该模型考虑了燃料质量添加、壁面传热、截面变化、壁面摩擦等影响因素,同时给出了燃烧室3种模态转换的边界条件。以单模块超燃冲压发动机为研究对象,仿真分析了超燃无激波模态和超燃斜激波模态下燃油当量比、攻角等参数对燃烧室气流参数的影响,结果表明,气流马赫数随当量比的增大、攻角的增大而减小。所建立的模型可为超燃冲压发动机总体设计及性能分析提供一种快速分析的手段。

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