舰船排烟参数对排气烟羽中波红外辐射特征影响分析

王振; 宋振国; 程勇; 杨水华; 黄志锋

doi:10.19693/j.issn.1673-3185.02376

舰船排烟参数对排气烟羽中波红外辐射特征影响分析

Influence of exhaust parameters on mid-infrared radiative characteristics of the plume

摘要

摘要:
目的排气烟羽辐射是舰船红外辐射的重要组成部分，分析排烟参数对红外辐射特征的影响对发展舰船隐身和反隐身技术具有重要作用。
方法利用气体辐射逐线法模型求解含气体的辐射传递过程，计算得到不同排烟温度和流量条件下的红外辐射图像，并分析排烟参数对辐射亮度、光谱辐射强度和3～ 5 μm波段的总辐射强度的影响。
结果结果表明，排气烟羽在4.18和4.43 μm处具有明显的强度峰值，而在4.26 μm处具有明显的强度谷值。
结论排气烟羽的红外辐射特征受排烟温度的影响较大，受排烟流量的影响较小。

Abstract:
Objectives Infrared radiative (IR) characteristics of the plume are the main part of ship infrared radiation. The influence analysis of exhaust parameters on radiative characteristics is very important for developing ship stealth and anti-stealth technology.
Methods In this work, the line-by-line method is applied to solve radiative transfer in gaseous media. Infrared radiative images of plumes under different temperatures and flow rates are obtained. Radiance, spectral radiative intensity, and spectrum-integrated radiative intensity over 3−5 μm are calculated and analyzed.
Results Results show that there are obvious peaks of spectral radiative intensity curves at 4.18μm and 4.43 μm, and an obvious valley at 4.26 μm.
Conclusions The infrared radiation characteristics of the ships exhaust plume are greatly affected by the exhaust temperature, but less affected by the exhaust flow rate.

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