| 引用本文: | 刘伟,沈清,张鲁民,等.钝倒锥体动导数数值工程模拟.[J].国防科技大学学报,1998,20(1):5-8.[点击复制] |
| Liu Wei,Shen Qing,Zhang Lumin,et al.Numerical and Analytic Simulation of the Dynamic Stability Derivative of Blunt Cone[J].Journal of National University of Defense Technology,1998,20(1):5-8[点击复制] |
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| 钝倒锥体动导数数值工程模拟 |
| 刘伟1, 沈清2, 张鲁民2, 张涵信2 |
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(1.国防科技大学 航天技术系 湖南 长沙 410073;2.中国空气动力研究与发展中心 绵阳 621000)
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| 摘要: |
| 分别采用求解非定常薄层近似的 N-S 方程数值模拟有粘扰动流场及非定常内伏牛顿流理论计算了钝倒锥外形的高超声速俯仰阻尼导数 Cma+Cmq。在非定常计算中通过引入“亚迭代”过程提高非定常流场的计算精度。两种方法计算结果一致，数值计算可应用于 3＜M<20,0°＜a＜20°时的一般流态俯仰阻尼导数计算。 |
| 关键词: 动导数，数值计算，工程方法，N-S 方程 |
| DOI： |
| 投稿日期：1997-03-20 |
| 基金项目: |
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| Numerical and Analytic Simulation of the Dynamic Stability Derivative of Blunt Cone |
| Liu Wei1, Shen Qing2, Zhang Lumin2, Zhang Hanxin2 |
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(1.Department of Aerospace Technology，NUDT，Changsha，410073;2.China Aerodynamics Research and Development Center，Mianyang，621000)
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| Abstract: |
| In this paper，the supersonic damping-in-pitch derivatives of blunt body are calculated with two methods. One is simulant unsteady viscous flow field by solving N-S equations，and another is the analytic method of unsteady embeddy Newtonian theory. According to the numerical method，the precision of unsteady flow calculation is improved by using sub-iteration. Similar results are abtained through the two methods. The numerical method can be applied to general flow calculation (3＜M<20,0°＜a＜20°). |
| Keywords: dynamic stability derivative,numerical calculation,analytic method,N-S equations |
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