A computational model for prediction of IR intensity and burn time of Magnesium-Teflon-Viton (MTV) based Infrared (IR) decoy flare of various configurations

IF 3.4 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2025-03-01 Epub Date: 2024-11-29 DOI:10.1016/j.infrared.2024.105651

Soujoy Debnath , Puspen Rej , Hitesh Kumar , Sunil Jain , Shaibal Banerjee

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Abstract

A computational model is developed for the regression rate of flare surface area to compute the IR intensity versus burn time for various configurations of flare pellets. 10 g of MTV composition filled in the diameter (Dia) 20 mm tube was fired to obtain Linear Burn Rate (LBR) and IR intensity in 1.8–2.6 µm and 3–5 µm waveband using Dual band radiometer. The calorific value in the Oxygen (O₂) atmosphere was measured for the composition using the bomb calorimeter. Model I predicts the average emissivity of two different LBR pyrotechnic MTV compositions in two wavebands. Using computed data, Model II calculates the IR intensity versus burn time in each waveband for configurations of flare pellets of circular (Dia 26 and Dia 36 mm), square(1″×1″×8″) and rectangular (2″×”1″×8″) using shrinking core model coupled with IR intensity equations. Radiometric data were generated for the two compositions. The calculated data were found to be in close agreement with that of the radiometric data for peak IR intensity and burn time for various flare configurations. Radiometric studies along with computational prediction for modified MTV composition have been carried out for various configurations. The predicted data from the computational model has been supported with the prediction of the species chemical composition at equilibrium using the REAL Thermochemical code.

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建立了不同构型镁铁氟乙烯（MTV）红外诱饵耀斑红外强度和燃烧时间预测计算模型

建立了耀斑表面积回归率的计算模型，计算了不同配置的耀斑丸的红外强度与燃烧时间的关系。将10 g的MTV成分填入直径为20 mm的管中，用双波段辐射计测量1.8 ~ 2.6µm和3 ~ 5µm波段的线性燃烧率（LBR）和红外强度。用炸弹量热计测量了该组分在氧（O2）大气中的热值。模型1预测了两种不同的LBR烟火MTV成分在两个波段的平均发射率。模型II利用计算得到的数据，利用收缩核模型结合红外强度方程，计算了圆形（直径26和直径36 mm）、方形（1″×1″×8″）和矩形（2″× 1″×8″）三种耀斑颗粒构型在每个波段的红外强度与燃烧时间的关系。生成了两种成分的辐射测量数据。结果表明，计算结果与各种耀斑构型的峰值红外强度和燃烧时间的辐射测量数据吻合较好。对各种配置进行了辐射学研究，并对改进的MTV成分进行了计算预测。计算模型的预测数据与REAL热化学代码对平衡态物质化学成分的预测相吻合。

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.