| 基于非定常低速预处理和DES的三角翼数值模拟 |
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| 引用本文： | 陈龙,伍贻兆,夏健.基于非定常低速预处理和DES的三角翼数值模拟[J].南京航空航天大学学报,2011,43(2). |
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| 作者姓名： | 陈龙 伍贻兆 夏健 |
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| 作者单位： | 南京航空航天大学航空宇航学院 南京 210016 |
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| 摘 要： | 发展出一套基于低速预处理技术采用SA-DES和SST-DES模型,对三维低速非定常流动进行数值模拟的方法.采用非结构混合网格有限体积方法求解非定常流场,时间离散采用基于LU-SGS隐式格式的双时间步长方法.对非定常低速预处理方法进行了推导和分析,并应用该方法对大攻角三角翼的非定常流场进行了数值模拟,对不同站位压强分布与试验值和参考文献值进行了对比,吻合较好.
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| 关 键 词： | 计算流体力学 非定常 低速预处理 三角翼 |
Delta Wing Numerical Simulation Using Unsteady Low Speed Precondition and DES |
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| Chen Long
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Wu Yizhao
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Xia Jian.Delta Wing Numerical Simulation Using Unsteady Low Speed Precondition and DES[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(2). |
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| Authors: | Chen Long Wu Yizhao Xia Jian |
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| Institution: | Chen Long,Wu Yizhao,Xia Jian(College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China) |
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| Abstract: | This paper develops a 3-D low speed unsteady numerical simulation method based on low speed precondition using spalart-Allmaras-detached-eddg simulation(SA-DES) and shear stress transport DES(SST-DES) models.Hybrid grid finite volume method is used to solve unsteady flow fields.The dual time stepping method based on LU-SGS implicit scheme is used in temporal discretization.The unsteady low speed precondition method is derived and analyzed.Delta wing unsteady flow at high-angle-of-attack is simulated by usin... |
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| Keywords: | computational fluid mechanics unsteady low speed precondition delta wing |
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