Theoretical calculation of mid-infrared spectra from hypersonic non-ablative sphere

Jie Wu; Xilong Yu; Xijuan Zhu; Jing Ma; Hongxia Mao

doi:10.1117/12.2246778

1 November 2016 Theoretical calculation of mid-infrared spectra from hypersonic non-ablative sphere

Jie Wu, Xilong Yu, Xijuan Zhu, Jing Ma, Hongxia Mao

Proceedings Volume 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control; 1015727 (2016) https://doi.org/10.1117/12.2246778
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

Hypersonic body moving in the atmosphere will suffer high temperature reacting flows which will emit complex radiation. Theoretical calculation was taken in this paper for a hypersonic non-ablative sphere. Hypersonic flow around the sphere was simulated using 9 species chemical kinetic and two temperature thermal non-equilibrium model. Based on this simulated flow field, the LOS method is used to solve radiative transfer and line-by-line model is used to calculate the spectrum from molecular and atoms in mid-infrared. The spectra from different components have been analyzed one by one. The calculation founds out that atom N and O diatomic molecule NO and bremsstrahlung will be important radiation source in this pure air hypersonic flow field. The radiation from hypersonic flow field has been analyzed in both high pressure environment and low pressure environment.

Citation Download Citation

Jie Wu, Xilong Yu, Xijuan Zhu, Jing Ma, and Hongxia Mao "Theoretical calculation of mid-infrared spectra from hypersonic non-ablative sphere", Proc. SPIE 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control, 1015727 (1 November 2016); https://doi.org/10.1117/12.2246778

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