| 高阶精度格式WCNS-E-5在亚跨声速流动中的应用研究 |
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| 引用本文： | 刘昕,邓小刚,毛枚良.高阶精度格式WCNS-E-5在亚跨声速流动中的应用研究[J].空气动力学学报,2005,23(4):425-430. |
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| 作者姓名： | 刘昕 邓小刚 毛枚良 |
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| 作者单位： | 中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家创新研究群体科学基金 |
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| 摘 要： | 采用高阶精度非线性紧致加权格式WCNS-E-5和Baldwin-Lomax模型,求解雷诺平均Navier-Stokes方程,开展了典型翼型与机翼的湍流流动数值模拟研究.对方程中粘性项采用的四阶精度差分近似以及网格导数求解与边界格式的四阶精度,保证了高精度算法的实现.计算结果表明:本文算法能够准确地模拟这些翼型与机翼的亚跨声速流场,得到与实验测量十分吻合的壁面压力分布,计算结果对网格的依赖性小.
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| 关 键 词： | 非线性紧致格式 Navier-Stokes方程 加权技术 Baldwin-Lomax模型 |
| 文章编号： | 0258-1825（2005）04-0425-06 |
| 收稿时间： | 2004-05-10 |
| 修稿时间： | 2004-05-102005-03-09 |
Investigation of high-order accurate scheme WCNS-E-5 applied to subsonic and transonic flows |
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| LIU Xin,DENG Xiao-gang,MAO Mei-liang.Investigation of high-order accurate scheme WCNS-E-5 applied to subsonic and transonic flows[J].Acta Aerodynamica Sinica,2005,23(4):425-430. |
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| Authors: | LIU Xin DENG Xiao-gang MAO Mei-liang |
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| Institution: | China Aerodynamics Research and Development Center, Mianyang 621000, China |
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| Abstract: | In this paper, the high-order accurate nonlinear compact weighted scheme called WCNS-E-5 with algebraic turbulent model Baldwin-Lomax is used to solve the Reynolds-average Navier-Stokes equations, and some typical turbulent flows past aerofoil and wing are numerically simulated. In addition to the high-order accuracy of discretization of inviscid term, fourth-order approximations for the viscous term, boundary scheme and grid deriviations are also concerned. The numerical solutions show that the algorithm utilized here simulate the subsonic and transonic turbulent flows accurately, and the computational results are well conformed to experimental data. Furthermore the dependent ability of WCNS-E-5 on the grids is quite little. |
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| Keywords: | nonlinear compact scheme Navier-Stokes equations weighted technique Baldwin-Lomax model |
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