Spectral Radiant Intensity Calculation of Air in Shock Tube

	Spectral Radiant Intensity Calculation of Air in Shock Tube
	Lyu, Jun Ming; Cheng, X. L.; Yu, J. J.; Li F(李飞); Yu XL(余西龙)
会议录名称	31st International Symposium on Shock Waves 1
	2019-03-22
页码	1225-1234
会议名称	31st International Symposium on Shock Waves
会议日期	2017-07-9~14
会议地点	Nagoya, Japan
摘要	Radiative heat may be greater than convective heat when flying at the velocity above 10 km/s. It is critical to precisely predict radiative heat for thermal protection system design. High-enthalpy flowfield solving and gas species’ radiant coefficient calculation are two main contents in computing radiation heat. A series of tests to obtain quantitative emission spectral radiation of air at high velocity have been conducted in a detonation-driven shock tube. Based on optical calibration and measurement, volumetric spectral radiant intensities of N2 and air have been acquired in the spectrum range of 310–380 nm and in the velocity range of 5.5–8 km/s. Unsteady non-equilibrium Navier-Stokes equations were numerically solved for temperature and gas concentration in the shock tube under test conditions. A narrowband model was used to calculate the gas spectral intensity at the specific position behind the shock corresponding to test time delay. The comparison between the computational results and the test measurement shows that the predictions of the flowfield parameters and the gas spectral radiation intensities are accurate and reliable.
ISBN号	978-3-319-91019-2, 978-3-319-91020-8
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语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91669
专题	高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Lyu, Jun Ming,Cheng, X. L.,Yu, J. J.,et al. Spectral Radiant Intensity Calculation of Air in Shock Tube[C]31st International Symposium on Shock Waves 1,2019:1225-1234.

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