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论文:2013,Vol:31,Issue(5):824-828 |
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引用本文： |
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刘溢浪, 张伟伟, 田八林, 叶正寅. 一种超音速高超音速动导数的高效计算方法[J]. 西北工业大学 |
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Liu Yilang, Zhang Weiwei, Tian Balin, Ye Zhengyin. Effectively Calculating Supersonic and Hypersonic Dynamic Derivatives[J]. Northwestern polytechnical university |
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| 一种超音速高超音速动导数的高效计算方法 |
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| 刘溢浪1, 张伟伟1, 田八林2, 叶正寅1 |
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1. 西北工业大学 翼型叶栅空气动力学国防科技重点实验室, 陕西 西安 710072;
2. 西安通信学院, 陕西 西安 710106 |
| 摘要: |
| 动导数是飞行器稳定性和操作性分析的原始输入参数。目前的计算方法主要包括工程方法和非定常CFD数值方法。前者虽具有较高的效率,但精度较低,后者则计算量较大。当地流活塞理论结合了CFD技术高精度和经典活塞理论高效率的优点。采用基于定常CFD技术的当地流活塞理论,发展了一种高效、高精度的超音速、高超音速飞行器动导数的计算方法。论文以纵向刚体模态为例推导了动导数的计算公式。通过两个国际标模算例的对比验证,证明了该方法的正确性和计算精度。 |
| 关键词:
动导数
超音速
高超音速
当地流活塞理论
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| Effectively Calculating Supersonic and Hypersonic Dynamic Derivatives |
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| Liu Yilang1, Zhang Weiwei1, Tian Balin2, Ye Zhengyin1 |
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1. College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Xi'an Communications Institute, Xi'an 710106 |
| Abstract: |
| Dynamic derivatives are the original input parameters for stability and maneuverability analysis in aircraft design. Engineering methods and unsteady CFD methods are the main techniques for calculating dynamic derivatives at present. For the two methods,the former has higher efficiency but with lower accuracy,while the latter requires high computational cost. The local piston theory combines the advantages of high precision of CFD technology and high efficiency of classical piston theory. Local piston theory based on steady CFD method is used to calculate dynamic derivatives efficiently and accurately for supersonic and hypersonic aircraft. The formulas of dynamic derivatives are derived for rigid symmetric modes. Comparison with the experiment data of two standard models proves preliminarily that our method for calculating supersonic and hypersonic dynamic derivatives attains good precision at relatively lower computational cost and is thus indeed effective. |
| Key words:
calculations
computational fluid dynamics
computer simulation
hypersonic vehicles
maneuverability
stability
dynamic derivatives
local piston theory
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| 收稿日期: 2012-10-10
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11072199);航天创新基金(CASC2013228)资助 |
| 通讯作者:
Email： |
| 作者简介: 刘溢浪(1990-),西北工业大学硕士研究生,主要从事流固耦合力学的研究。
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