摘要
对波瓣喷管-弯曲混合管构成的直升机红外抑制器内空气动力学特性和红外辐射特性进行了数值研究,在计算过程中,有机地将三维流场数值计算、壁温计算与红外辐射计算结合起来,与相关实验数据的对比验证表明计算结果与实验结果仅相差15%左右,且红外辐射强度空间分布规律一致;通过对不同缩比模型的数值计算,揭示了模化比对壁面及羽流的红外辐射特性的影响规律.计算结果符合物理过程本质.
The internal aerodynamic and infrared radiation characteristics for the helicopter infrared radiation suppressor consisted of lobed nozzle and curved mixing duct were studied by numerical calculations. In the computation, the computations of 3-D flow field and wall temperature and infrared radiation are integrated with. Compared with the experimental data, it is indicated that the relative error between the computational and experimental results is about 15%. The spatial distribution of infrared radiation intensity from computation has the same law as that from experiments. And a series of computations are conducted to obtain the effect of model scale on the wall and plume radiations. The results are verified with the nature the physics process.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第2期95-100,共6页
Journal of Infrared and Millimeter Waves
基金
武器装备预研基金(51410040304HK0201)资助项目
关键词
红外抑制器
红外辐射
数值计算
逆向蒙特卡罗法
infrared suppressor
infrared radiation
numerical computation
reverse Monte-Carlo method
