摘要
分析了超音速射流由于高速相对运动产生多普勒谱线漂移效应对光辐射特性计算的影响。通过采用逐线计算法对不同环境压力、气流温度、气流速度条件下超音速燃气射流在不同的红外光谱区(2.7微米谱带和4.3微米谱带)光辐射谱带积分强度的计算结果比较表明:多普勒漂移效应受环境总压影响最大,压力越大多普勒漂移的影响越小;随着温度升高多普勒漂移效应的影响降低;随着相对速度的增加,多普勒漂移效应的影响多数情况下是增加的。
The influence of Doppler shift on the calculation of spectral properties was analyzed which produced by the relative velocity of supersonic velocity jet flow. The band integral intense of supersonic velocity gas jet flow calculated by the Line-by-Line method was compared under different environment pressure, different gas temperature and different gas flow velocity. The results show that the Doppler shift effect produced by environment pressure was the biggest, the Doppler shift effect decreased when the environment pressure and gas flow temperature increased, but when the relative velocity increased, the Doppler shift effect would mostly increase.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2005年第6期1001-1003,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50306004)
关键词
多普勒频移
超音速气流
光谱辐射特性
逐线计算法
doppler shift effect
supersonic velocity gas flow
spectral radiation properties
line-byline method
