摘要
为解决有限体积法耦合求解排气系统红外辐射特性时角度离散数目不足的问题,提出多重角度离散方法,并计算了某轴对称排气系统的空腔-喷流组合红外辐射特性。用较粗的离散角度耦合计算每个喷管空腔微元面的辐射亮度,用较细的离散角度对空腔-喷流组合辐射的每个控制角进行独立计算,求解红外辐射强度。结果表明,多重角度离散方法可以使排气系统红外辐射程序在保证计算精度的同时,探测方向更加灵活,克服了有限体积法求解喷管空腔-喷流组合辐射强度分布时角度离散数目不足的问题。
A multi-angle discrete method was proposed to solve the plume radiation for finite volume method （FVM）. The infrared radiation coupling of nozzle of an axisymmetric calculated based on the multi-angle discrete method. By calculating the nozzle cavity radiations cavity radiation and exhaust system was coupling with plume using coarse discrete solid angle and infrared radiation of exhaust system separately using fine discrete solid angle, the multi - angle discrete method makes the exhaust system infrared radiation simulation code obtain more direction results. The dissertation presents that the multi - angle discrete method is appropriate for the coupled calculation of flow field and gas radiation field for exhaust system.
出处
《科学技术与工程》
北大核心
2012年第31期8317-8321,8338,共6页
Science Technology and Engineering
关键词
多重角度离散
排气系统
红外辐射
有限体积法
multi-angle discrete exhaust system infrared radiation finite volume method
作者简介
李喜喜（1984-），男，山西省原平市人，博士研究生，研究方向：排气系统气动与红外隐身一体化设计、飞行器外表面红外辐射数值模拟、CGNS网格系统、基于CUDA的反向蒙特卡罗并行计算。
