张子佩1,2, 赵钟1,2(), 陈坚强1,2, 刘健1,2, 邓小兵1,2
收稿日期:
2022-03-18
修回日期:
2022-05-02
接受日期:
2022-05-25
出版日期:
2023-03-25
发布日期:
2022-06-17
通讯作者:
赵钟
E-mail:bell_cardc@163.com
基金资助:
Zipei ZHANG1,2, Zhong ZHAO1,2(), Jianqiang CHEN1,2, Jian LIU1,2, Xiaobing DENG1,2
Received:
2022-03-18
Revised:
2022-05-02
Accepted:
2022-05-25
Online:
2023-03-25
Published:
2022-06-17
Contact:
Zhong ZHAO
E-mail:bell_cardc@163.com
Supported by:
摘要:
基于国家数值风洞风雷软件开源框架,设计开发了LES(Large Eddy Simulation)湍流模型,主要包括Fourier谱/有限差分方法LES求解器和有限体积/有限差分方法LES求解器。简要介绍了采用的不可压缩流动求解的投影法、Fourier谱/有限差分混合方法、亚格子模型等理论方法,给出设计的软件框架和计算流程,尤其说明采用的松/紧2种耦合模式。通过数值模拟不可压缩槽道湍流、亚临界雷诺数圆柱绕流、NACA0012临界攻角的低频振荡算例,验证求解器的计算精度和复杂湍流模拟能力。基于风雷开源框架设计的开源LES模型,具备高精度数值格式、亚格子模型、湍流统计等通用模块,可为国内学者提供一个LES湍流模拟研究的开放平台。
中图分类号:
张子佩, 赵钟, 陈坚强, 刘健, 邓小兵. 风雷软件LES开发设计与验证[J]. 航空学报, 2023, 44(6): 127171-127171.
Zipei ZHANG, Zhong ZHAO, Jianqiang CHEN, Jian LIU, Xiaobing DENG. Development and verification of LES model in NNW-PHengLEI[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(6): 127171-127171.
表 1
本文算例和文献采用的数值方法、计算域、网格和亚格子模型
算例序号 | 数值方法 | Lx | Ly | Lz | Nx | Ny | Nz | Δx+ | Δy+ | Δz+ | 亚格子模型 |
---|---|---|---|---|---|---|---|---|---|---|---|
A | Fourier谱/高阶有限差分方法 | 2πh | 2h | πh | 256 | 192 | 192 | 10 | 0.2~12.0 | 6.7 | 无 |
B | Fourier谱/高阶有限差分方法 | 2πh | 2h | πh | 128 | 192 | 96 | 20 | 0.2~12.0 | 13.0 | SM |
C | Fourier谱/高阶有限差分方法 | 2πh | 2h | πh | 128 | 192 | 96 | 20 | 0.2~12.0 | 13.0 | DSM |
D | Fourier谱/高阶有限差分方法 | 2πh | 2h | πh | 128 | 192 | 96 | 20 | 0.2~12.0 | 13.0 | Sigma |
DNS[ | Fourier谱/ Chebyshev多项式 | 2πh | 2h | πh | 256 | 192 | 192 | 10 | 0.2~12.0 | 6.7 | 无 |
DSM[ | 4th order Galerkin finite element | 3.5h | 2h | 1.3h | 30 | 138 | 50 | 30 | 1.0~17.0 | 10.0 | DSM |
Sigma[ | 4th order Galerkin finite element | 3.5h | 2h | 1.3h | 30 | 138 | 50 | 30 | 1.0~17.0 | 10.0 | Sigma |
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