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Open AccessArticle
Numerical Simulation of Spectral Radiation for Hypersonic Vehicles
by
Xubo Du
Xubo Du ,
Yongqiang Shi
Yongqiang Shi *,
Qingzhen Yang
Qingzhen Yang ,
Dahe Song
Dahe Song and
Xinyuan Liu
Xinyuan Liu
School of Power and Energy, Northwestern Polytechnical University, Xi’an 710129, China
*
Author to whom correspondence should be addressed.
Aerospace 2024, 11(10), 802; https://doi.org/10.3390/aerospace11100802 (registering DOI)
Submission received: 25 June 2024
/
Revised: 23 September 2024
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Accepted: 27 September 2024
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Published: 29 September 2024
Abstract
The spectral radiation of hypersonic vehicles and surrounding flow fields is crucial for optical target detection. A novel approach combines Low-Discrepancy Sequences with the Reverse Monte Carlo Method to simulate the spectral radiation of hypersonic missiles. The effects of chemical non-equilibrium reactions and high-emissivity coating failures on the spectral radiation of a typical biconical hypersonic missile were investigated. Significant differences were found among chemical equilibrium, non-equilibrium, non-reactive, and catalytic wall models. High-emissivity coating failures occur mainly in the high-temperature regions of the nose cone and fins. The non-equilibrium model shows a transition peak distribution of NO in the head shock layer within the ultraviolet gamma band, with integrated ultraviolet radiation (200–300 nm) three times higher than the equilibrium model. In the 1–3 μm band, the non-equilibrium model’s radiation intensity at a 120° horizontal detection angle is about 1.46 times that of the equilibrium model. Using real coating emissivity, the 3–5 μm band radiation intensity is about 5% higher, and the 8–14 μm band is about 8.51% lower than the uniform emissivity model. When high-emissivity coating emissivity fails by 40%, the 3–5 μm band intensity decreases by about 15.38%, and the 8–14 μm band intensity decreases by about 12.67%.
Share and Cite
MDPI and ACS Style
Du, X.; Shi, Y.; Yang, Q.; Song, D.; Liu, X.
Numerical Simulation of Spectral Radiation for Hypersonic Vehicles. Aerospace 2024, 11, 802.
https://doi.org/10.3390/aerospace11100802
AMA Style
Du X, Shi Y, Yang Q, Song D, Liu X.
Numerical Simulation of Spectral Radiation for Hypersonic Vehicles. Aerospace. 2024; 11(10):802.
https://doi.org/10.3390/aerospace11100802
Chicago/Turabian Style
Du, Xubo, Yongqiang Shi, Qingzhen Yang, Dahe Song, and Xinyuan Liu.
2024. "Numerical Simulation of Spectral Radiation for Hypersonic Vehicles" Aerospace 11, no. 10: 802.
https://doi.org/10.3390/aerospace11100802
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