| 一种新型颤振激励系统的数值计算研究 |
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| 引用本文： | 许和勇,叶正寅,孙勇军.一种新型颤振激励系统的数值计算研究[J].飞行力学,2006,24(2):93-96. |
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| 作者姓名： | 许和勇 叶正寅 孙勇军 |
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| 作者单位： | 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. 中国飞行试验研究院,飞机所,陕西,西安,710089 |
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| 摘 要： | 针对一种新型颤振激励系统的特点,采用非结构旋转运动网格技术,通过数值求解非定常欧拉方程,计算了该激励系统工作时的非定常气动力特性,并与准定常计算结果进行了比较。研究结果表明:采用非定常方法所得结果与准定常计算结果有明显的差别;气动力的变化与激励系统中圆柱的旋转方向有关,旋转角速度越大,气动力变化的幅值越小;气动力的幅值与圆柱缝道宽度也有一定关系。
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| 关 键 词： | 颤振激励系统 非结构旋转运动网格 非定常欧拉方程 |
| 文章编号： | 1002-0853(2006)02-0093-04 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-12-28 |
Numerical Investigation of a New Kind of Flutter Exciting System |
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| XU He-yong,YE Zheng-yin,SUN Yong-jun.Numerical Investigation of a New Kind of Flutter Exciting System[J].Flight Dynamics,2006,24(2):93-96. |
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| Authors: | XU He-yong YE Zheng-yin SUN Yong-jun |
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| Abstract: | The unsteady aerodynamic characteristic of a new kind of flutter exciting system is investigated with the numerical simulation.An effective unstructured rotational dynamic grid was adopted to solve the unsteady two-dimensional Euler equations.The results of the unsteady method were compared with the quasi-steady results.It is shown that the results obtained by the present unsteady method are very different from the quasi-steady results.The aerodynamic lift variation was relevant to the rotational direction of the cylinder.The faster the rotational speed is,the smaller the unsteady lift amplitude will be.The opening width of the cylinder also affects the unsteady lift effectively. |
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| Keywords: | flutter exciting system unstructured rotational dynamic grid unsteady Euler equations |
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