直升机红外抑制器红外辐射特性的数值研究和实验验证  

NUMERICAL CALCULATION AND EXPERIMENTAL VERIFICATION FOR THE INFRARED RADIATION CHARACTERISTICS OF HELICOPTER INFRARED RADIATION SUPPRESSOR

作　　者：单勇[1] 张靖周[1] 李立国[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《红外与毫米波学报》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

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.

关 键 词：红外抑制器 红外辐射 数值计算 逆向蒙特卡罗法 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程] P722.5[天文地球—海洋科学]