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基于蒙特卡洛法的尾焰红外辐射特性仿真与试验

Acta Photonica Sinica(2018)

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Abstract
根据尾焰中气体的吸收特性,基于蒙特卡洛法建立了尾焰红外辐射特性模型,并用该模型计算了某型发动机尾焰在5个不同红外波段的辐射特性(1.32~1.69 μm,1.56~2.27 μm,2.27~3.8μm,3.8~8.3 μm,8.3~20μm).为了验证仿真模型的有效性,进行了发动机点火试验.试验结果与仿真结果表明该型涡喷发动机在2.27~3.8 μm波段辐射最强,在长波波段8.3~20 μm辐射面积最大.
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Key words
Physical properties,Radaition effect,Infrared absorption spectroscopy,Plume dynamics,Monte Carlo calculation
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