真空热试验中红外笼对伞状天线非稳态加热过程数值仿真
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摘要
文章针对真空热试验红外加热装置计算机辅助设计中的非稳态过程模拟问题,以一种较为复杂的伞状天线结构为例,以红外笼作为加热装置,对真空热试验环境下的加热过程进行数值仿真研究。采用红外笼的等效加热面模型简化仿真模型,使计算负荷可以达到工程应用的水平,同时满足模拟精度的要求。数值仿真与试验数据对比证明,所采用的计算方法可以为红外笼等红外加热装置的设计提供准确的非稳态加热过程模拟。
The infrared heating facilities are universally used in the spacecraft thermal vacuum tests. To improve the accuracy and the efficiency of the CAD based design process in the numerical simulation for complicated configurations, this paper, for an umbrella-shaped antenna, with an infrared heating cage as the heating apparatus, carries out the numerical analysis of the heating process with a simplified model, as well as an effective heating panel method, in which the computation resource requirement is reduced to an affordable level for engineering applications. It is confirmed by comparing with the experimental data that the numerical simulation is effective in providing guidances for the design of heating facilities used for the thermal vacuum test of aerospace products.
The infrared heating facilities are universally used in the spacecraft thermal vacuum tests. To improve the accuracy and the efficiency of the CAD based design process in the numerical simulation for complicated configurations, this paper, for an umbrella-shaped antenna, with an infrared heating cage as the heating apparatus, carries out the numerical analysis of the heating process with a simplified model, as well as an effective heating panel method, in which the computation resource requirement is reduced to an affordable level for engineering applications. It is confirmed by comparing with the experimental data that the numerical simulation is effective in providing guidances for the design of heating facilities used for the thermal vacuum test of aerospace products.
引文
[1]杨晓宁,任德鹏,贾阳.红外加热棒式空间外热流模拟器的数值研究[J].中国空间科学技术,2009(4):54-60YANG X N,REN D P,JIA Y.Numerical study on space outer-heat simulator manner with infrared thermal club[J].Chinese Space Science And Technology,2009(4):54-60
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[2]BRADSHAW H.Thermal and alignment analysis of the instrument-level Atlas thermal vacuum test:GSFC.ABS.6855.2012[R].NASA Thermal&Fluids Analysis Workshop,2012
[3]KAN Y,PEABODY H.Development of the GPMobservatory thermal vacuum test model:GSFC.ABS.6865.2012[R].NASA Thermal&Fluids Analysis Workshop,2012
[4]DEIML M,SUDERLAND M,REISS P,et al.Development and evaluation of thermal model reduction algorithms for spacecraft[J].Acta Astronautica,2015(110):168-179
[5]ABBOTT J,LEE S-C.Thermal modeling technique for large complex isogrid structures:AIAA2002-0362[R],2002
[6]PANCZAK T D,RING S G,WELCH M J,et al.Thermal Desktop:a CAD based system for thermal analysis and design[G].v5.7.Cullimore&Ring Technologies Inc,2014
[7]CULLIMORE B A,RING S G,JOHNSON D A.SINDA/FLUINT:general purpose thermal/fluid network analyzer[G].v5.7.Cullimore&Ring Technologies Inc,2014