强激光与粒子束, 2012, 24 (2): 267, 网络出版: 2012-05-08   

环形HYLTE喷管耦合段及光腔区流场的数值模拟

Numerical study of flow field in coupling region and optical cavity of annular HYLTE nozzle
作者单位
国防科学技术大学 光电科学与工程学院, 长沙 410073
摘要
参考传热学相关理论,估算燃烧室的传热损耗分数及相应的平衡温度,确定了主喷管的入口参数设置。在此基础上,对环形HYLTE喷管的耦合段及光腔区流场进行3维的数值模拟,给出了F原子质量分数、静温、静压的空间分布,得到了光腔区各支谱线的小信号增益系数变化曲线。将计算结果与实验结果进行比对,光谱测量结果及移动光轴实验证实了计算模型的合理性。
Abstract
Heat energy loss fraction and corresponding equilibrium temperature of combustor are roughly estimated according to the heat transfer theory on condition that input fuels’ mass flow rates, compositions proportioning and relevant configuration parameters of combustor are known. Entrance boundary parameters of primary nozzle are then determined. The flow field in coupling region and optical cavity of annular hypersonic low temperature (HYLTE) nozzle is numerically simulated using 3D computational fluid dynamics method. Spatial distributions of F atom mass fraction, static temperature and pressure are described. Small signal gain coefficient distributions for spectral lines in optical cavity are calculated by post processing of the flow field data. The experiments of measuring output spectrum and moving optical axis demonstrate the rationality of the computational model considering heat energy loss of combustor walls.

靳冬欢, 刘文广, 陈星, 陆启生, 赵伊君. 环形HYLTE喷管耦合段及光腔区流场的数值模拟[J]. 强激光与粒子束, 2012, 24(2): 267. Jin Donghuan, Liu Wenguang, Chen Xing, Lu Qisheng, Zhao Yijun. Numerical study of flow field in coupling region and optical cavity of annular HYLTE nozzle[J]. High Power Laser and Particle Beams, 2012, 24(2): 267.

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