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Generalized model for infrared perception from an engine exhaust

Heragu, SS and Rao, KVL and Raghunandan, BN (2002) Generalized model for infrared perception from an engine exhaust. In: Journal of Thermophysics and Heat Transfer, 16 (1). pp. 68-76.

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A comprehensive scheme has been developed for the prediction of radiation from engine exhaust and its incidence on an arbitrarily located sensor. Existing codes have been modified for the simulation of flows inside nozzles and jets. A novel view factor computation scheme has been applied for the determination of the radiosities of the discrete panels of a diffuse and gray nozzle surface. The narrowband model has been used to model the radiation from the gas inside the nozzle and the nonhomogeneous jet. The gas radiation from the nozzle inclusive of nozzle surface radiosities have been used as boundary conditions on the jet radiation. Geometric modeling techniques have been developed to identify and isolate nozzle surface panels and gas columns of the nozzle and jet to determine the radiation signals incident on the sensor. The scheme has been validated for intensity and heat flux predictions, and some useful results of practical importance have been generated to establish its viability for infrared signature analysis of jets.

Item Type: Journal Article
Publication: Journal of Thermophysics and Heat Transfer
Publisher: American Institute of Aeronautics and Astronautics
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Keywords: Carbon dioxide;Concentration distribution;Velocity distribution;Jets;Sensors;Let;Form factors;Digital simulation;Mesh generation;Temperature distribution;Aircraft ;Motors;Exhaust gases;Infrared radiation;Radiating flow;
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 19 Jul 2011 05:46
Last Modified: 19 Jul 2011 05:46
URI: http://eprints.iisc.ac.in/id/eprint/39219

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