Modeling of flow field and analysis of IR characteristic of aircraft based on Fluent

Wu, Yueshen; Liao, Shouyi; Zhang, Zuoyu; Chenlin, Li; He, Desheng

doi:10.3788/irla201847.0704001

Cited by 3 publications

(1 citation statement)

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“…Wu Yanqing et al conduct numerical simulations of aircraft plume flow using commercial CFD software, computing the exhaust plume flow field without considering chemical reactions, and further explore the influence of solar radiation on the infrared radiation characteristics of the flow field. Li Xia and her team [6] delve into the influence of flame reheat effects on the flow field and infrared radiation characteristics at various flight altitudes via numerical simulations, shedding light on the degree of change and underlying mechanisms in short and mid-wave radiation intensity. Bao Xingdong et al employ numerical computations to probe the effects of engine exhaust parameters on flame flow, placing particular emphasis on the influence of exhaust temperature and pressure on flow field structure, reheat effects, and infrared radiation characteristics.…”

Section: Introductionmentioning

confidence: 99%

Impacts of radiative heat transfer on the flow field and radiation of engine exhaust plumes

haiyan,

Weibiao,

Zhenhua

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition

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Radiative heat transfer is a significant heat transfer mechanism in the formation of engine exhaust plumes, resulting in varied effects on the exhaust plume flow field and infrared radiation characteristics. In this work, simulation model is used to simulate exhaust plume flow of solid-propellant rocket motor, with consideration given to the recombination effects of 9 species and 10 elementary reactions. The study investigates the impact of radiative heat transfer on the exhaust plume flow field at different altitudes. Furthermore, a narrow-band model and the Line of Sight (LOS) approach are employed to calculate the infrared radiation characteristics of the flow field. It is indicated that radiative heat transfer affects the temperature of the flow field and the distribution of intermediate products such as CO and OH. Notably, at flight altitudes of 10km, the impact of radiative heat transfer is relatively weak, while at an altitude of 60km, the effect is more pronounced, which is attributed to the rarified air conditions prevalent in high-altitude regions, where molecular collisions are less frequent, thereby radiative heat transfer plays a significant role in heat conduction. Furthermore, radiative heat transfer also exerts a noticeable impact on the infrared characteristics of the flow field.

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Section: Introductionmentioning

confidence: 99%