脉冲爆震发动机羽流场及红外辐射特性研究

Hongxia Mao, Xingdong Bao, Jie Wu, Li Zheng
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引用次数: 0

摘要

脉冲爆震发动机作为一种新型的推进系统,与其他传统的推进系统相比,具有许多优点。未来,脉冲爆震发动机有望成为高超声速飞行器的推进系统。然而,废气羽流是红外辐射源的探测、跟踪和识别。对二维轴对称非定常Navier-Stokes方程进行了数值求解,并对氢/空气混合物的化学反应动力学进行了详细研究。以排气羽流的压力场、温度场和主要成分场为输入数据,采用逐行法和LOS法计算了排气羽流的红外光谱辐射特性。详细分析了烟羽流场结构和红外辐射特性。分析了不同喷嘴结构对羽流辐射的影响。
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The Research on Plume Flow Field and Infrared Radiation Characteristic of Pulse Detonation Engine
As a new concept propulsion system, pulse detonation engines (PDE) show many advantages compared to other conventional propulsion system. In the future, pulse detonation engines will be expected to become the propulsion system of hypersonic flight vehicle. However, exhaust plume is the infrared radiation source of detection, tracking and recognition. Two-dimensional axisymmetric and unsteady Navier-Stokes equations were numerically solved and detailed chemical reaction kinetics of hydrogen/air mixture was used. With the fields of pressure, temperature and main components of the exhaust plume as input data, the line-by-line method and LOS method was used to calculate the infrared spectral radiation properties of the plume. The plume flow field structure and infrared radiation characteristics are analyzed in detail. The effect of the different nozzle structure on plume radiation was analyzed.
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