| 摘要: |
| 三维后体尾喷管是吸气式高超声速飞行器产生推力、升力的关键部件,需要精细设计,最大限度地提升三维膨胀过程中的气动特性。本文在二维后体尾喷管优化设计的基础上,发展了一种三维后体尾喷管的优化设计方法。通过参数化建模、三维喷管计算网格自动生成、空间推进CFD解算器及NSGA-II多目标优化软件等技术手段,对后体尾喷管三维构型进行了多目标优化设计。优化后的三维后体尾喷管与原始喷管相比,推力和升力都得到了较大提升。 |
| 关键词: 高超声速飞行器 三维后体尾喷管 多目标优化 空间推进算法 |
| DOI： |
| 分类号:V235,213 |
| 基金项目:国家“八六三”基金项目(2006AA723041) |
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| 3D afterbody nozzle optimization of air-breathing hypersonic vehicle |
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HE Xu-zhao1,2, NI Hong-li2, ZHOU Zheng3, LE Jia-ling4, SONG Wen-yan1
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1.School of Power and Energy, Northwestern Polytechnical Univ., Xi’an 710072, China;2.China Aerodynamics Research and Development Center, Mianyang 621000, China;3.China Aerodynamics Research and Development Center, Mianyang 621001, China;4.China Aerodynamics Research and Development Center, Mianyang 621002, China
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| Abstract: |
| 3D after-body nozzle of air-breathing hypersonic vehicle is a main part for generating thrust and lift. It needs careful design to maximum aerodynamic expansion characteristic. Based on 2D after-body nozzle optimization method, a 3D after-body nozzle optimization method is developed. Combining parameterized shape generating, 3D nozzle computation grid auto-generation, matured 3D space-marching CFD solver and NSGAII multi-objects optimization techniques, 3D nozzle configuration is optimized in multi-objective way. The nozzle thrust and lift have been improved after optimization. |
| Key words: Hypersonic vehicle 3D after-body nozzle Multi-objects optimization Space marching algorithm |
