| 基于CFD的动导数计算与减缩频率影响分析 |
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| 引用本文： | 孙涛,高正红,黄江涛.基于CFD的动导数计算与减缩频率影响分析[J].飞行力学,2011,29(4):15-18. |
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| 作者姓名： | 孙涛 高正红 黄江涛 |
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| 作者单位： | 西北工业大学翼型叶栅空气动力学国家重点实验室,陕西西安,710072 |
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| 摘 要： | 以CFD流场与气动力计算为基础,分别利用小幅度强迫振动模式和差分两种方法推导了飞行器的纵向组合动导数计算表达式；建立了基于CFD技术的飞行器动导数计算方法；以国际标模Finner导弹为例,利用所推导的两种方法进行该导弹的动导数计算,重点分析了减缩频率对动导数计算的影响,提出了利用CFD方法开展动导数计算时减缩频率的选择...
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| 关 键 词： | 动导数 非定常流动 减缩频率 CFD |
Identify of aircraft dynamic derivatives based on CFD technology and analysis of reduce frequency |
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| SUN Tao,GAO Zheng-hong,HUANG Jiang-tao.Identify of aircraft dynamic derivatives based on CFD technology and analysis of reduce frequency[J].Flight Dynamics,2011,29(4):15-18. |
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| Authors: | SUN Tao GAO Zheng-hong HUANG Jiang-tao |
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| Institution: | SUN Tao,GAO Zheng-hong,HUANG Jiang-tao(National Key Laboratory of Aerodynamic Design and Research,NWPU,Xi'an 710072,China) |
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| Abstract: | Based on the art of Computational Fluid Dynamics(CFD),a computational method of dynamic derivatives for aircraft is built using the dynamic stability derivative expression deduced from small amplitude oscillation model and differential model respectively.In this paper,the basic Finner model is taken as an example,to compute the dynamic derivatives of this missile using this two methods,the effects of reduce frequency on the computation of dynamic derivatives are analyzed especially,some laws about choosing ... |
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| Keywords: | dynamic derivative unsteady flow reduce frequency CFD |
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