| 结构/非结构混合网格数值模拟栅格翼 |
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| 引用本文： | 吴晓军,马明生,邓有奇,马自华. 结构/非结构混合网格数值模拟栅格翼[J]. 空气动力学学报, 2009, 27(4) |
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| 作者姓名： | 吴晓军 马明生 邓有奇 马自华 |
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| 作者单位： | 南京航空航天大学航空宇航学院,江苏,南京,210016;西北工业大学航空学院,陕西,西安,710072;中国空气动力研究与发展中心计算空气动力研究所,四川,绵阳,621000 |
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| 摘 要： | 为了详细了解栅格翼内部的流动特性,设计满足飞行器性能要求的栅格翼,本文开展了多种不同单栅格外形的气动特性数值计算,对单个栅格的外形进行了初步选型研究;然后采用结构网格、结构与非结构混合网格求解NS方程,对带有两片栅格翼的导弹进行了数值模拟,结构网格计算结果与结构非结构混合网格计算结果一致,并与国外文献的计算结果和风洞试验结果进行了对比,三者的结果吻合较好.采用混合网格比结构网格的网格规模小许多,可以节省大量计算机内存和计算时间,是一种比较好的栅格翼数值模拟方法.
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| 关 键 词： | 栅格翼 长高比 激波反射 MUSCL方法 |
Navier-Stokes computations of a grid fin missile on hybrid structured-unstructured grids |
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| WU Xiao-jun,MA Ming-sheng,DENG You-qi,MA Zhi-hua. Navier-Stokes computations of a grid fin missile on hybrid structured-unstructured grids[J]. Acta Aerodynamica Sinica, 2009, 27(4) |
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| Authors: | WU Xiao-jun MA Ming-sheng DENG You-qi MA Zhi-hua |
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| Affiliation: | 1.College of Aerospace Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China;2.Northwestern polytechnical University of Aeronautics and Astronautics;Xi'an 210016;China3.China Aerodynamics Research and Development Center;Mianyang Sichuan 621000;China |
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| Abstract: | Several different cross-section shapes are moudled to research the detailed flow characteristics and to desigin the favourable cross-section for maximum normal force.Viscous CFD calculations are performed to predict the aerodynamic coefficients and flowfield for a missile with grid fins by using hybrid structure-unstructured grids.The comparisons between computational results and experimental data are made,The predicted results show excellent agreement with the experimental data and the reference on the nor... |
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| Keywords: | grid fin length to high ratio shock wave reflect MUSCL method |
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