Simulation and analysis of hot plume infrared signature based on SNB model

Abstract Numerical calculation of infrared emission from hot plume is of great significance for flight monitoring and detections. In this paper, the SNB (statistical narrow band) model established with parameters derived from the high-resolution spectral database HITEMP 2010 is used to perform the hot plume infrared signature simulations. Accuracy of the model is examined by the exact LBL (line by line) method, which proves the model’s reliability to predict radiative properties of combustion gases. In the application part, the SNB model is used to analyze infrared signatures of aircraft plumes cruising at different flight altitudes. The results show that cruising at a higher-altitude will obviously reduce the plume infrared emission. Besides, the plume infrared emissive energy mainly concentrates in a special wavenumber interval and can be strongly absorbed by atmosphere.

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Exciton narrow band model for 7,7,8,8-tetracyanoquino-dimethane salts

Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics ◽

10.1039/f29757101792 ◽

1975 ◽

Vol 71 ◽

pp. 1792

Author(s):

L. Shields

Keyword(s):

Narrow Band ◽

Band Model ◽

Narrow Band Model

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HITEMP derived spectral database for the prediction of jet engine exhaust infrared emission using a statistical band model

Journal of Quantitative Spectroscopy and Radiative Transfer ◽

10.1016/j.jqsrt.2012.04.002 ◽

2012 ◽

Vol 113 (12) ◽

pp. 1575-1593 ◽

Cited By ~ 7

Author(s):

E. Lindermeir ◽

K. Beier

Keyword(s):

Infrared Emission ◽

Band Model ◽

Engine Exhaust ◽

Jet Engine ◽

Spectral Database

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Band Models for Radiative Transfer in Non-LTE Diatomic Molecules of CO2-N2 Plasmas

2010 14th International Heat Transfer Conference, Volume 5 ◽

10.1115/ihtc14-22301 ◽

2010 ◽

Cited By ~ 2

Author(s):

Se´bastien Depraz ◽

Philippe Rivie`re ◽

Marie-Yvonne Perrin ◽

Anouar Soufiani

Keyword(s):

Least Square ◽

Radiative Properties ◽

Model Parameters ◽

Band Model ◽

Electronic Systems ◽

General Description ◽

Line Profiles ◽

Equilibrium Conditions ◽

Thermodynamic State ◽

Narrow Band Model

A statistical narrow-band model is developed for the optically non-thin electronic systems of carbonaceous molecules in CO2-N2 plasmas and its accuracy is studied under equilibrium and non-equilibrium conditions. Line by line calculations are used to produce curves of growth of transmissivities from which band model parameters are calculated by least-square adjustments. The model is shown to provide quite accurate description of radiative properties and radiative intensities for Doppler, Lorentz, and Voigt line profiles, and for both local thermodynamic equilibrium and a multi-temperature description of the gas mixture thermodynamic state. The model is also suitable for a more general description of the gas thermodynamic state where the electronic state populations are arbitrary.

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