| 双时间隐式方法求解非定常绕流的相关问题 |
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| 引用本文： | 赵海洋,刘伟,任兵.双时间隐式方法求解非定常绕流的相关问题[J].国防科技大学学报,2005,27(3):25-29. |
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| 作者姓名： | 赵海洋 刘伟 任兵 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 空间采用三阶精度的WeightedNND(WNND)格式,时间方向则采用具有二阶精度的双时间步隐式方法求解二维非定常Euler方程,数值模拟了NACA0012翼型俯仰强迫振动流场,讨论了内迭代步数、内迭代收敛判据以及物理时间步长对计算结果、计算效率与计算CPU时间的影响,并将计算结果与实验值进行了比较。
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| 关 键 词： | WNND格式 NACA0012翼型 非定常流动 欧拉方程 双时间步方法 |
| 文章编号： | 1001-2486(2005)03-0025-05 |
| 收稿时间： | 2004/11/12 0:00:00 |
| 修稿时间： | 2004年11月12 |
The Unsteady Flow Field Calculation with a Dual-time Stepping Method |
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| ZHAO Haiyang,LIU Wei and REN Bing.The Unsteady Flow Field Calculation with a Dual-time Stepping Method[J].Journal of National University of Defense Technology,2005,27(3):25-29. |
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| Authors: | ZHAO Haiyang LIU Wei and REN Bing |
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| Institution: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | Based on a 3rd order weighted NND scheme, a dual-time stepping method is used to solve the 2D unsteady Euler equations and the flow field of a forced vibration airfoil at transonic speed is simulated numerically. The influence of the inner iteration steps, the inner iteration tolerance and the magnitude of physical time step on the calculation results and efficiency are discussed. The results achieved with the present methodal are compared with the experimental results. |
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| Keywords: | WNND scheme NACA0012 airfoil unsteady flow Euler equations dual-time stepping methods |
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