Applied Mathematics and Mechanics (English Edition) ›› 2019, Vol. 40 ›› Issue (3): 305-320.doi: https://doi.org/10.1007/s10483-019-2425-6

• 论文 •    下一篇

Wall-modeling for large-eddy simulation of flows around an axisymmetric body using the diffuse-interface immersed boundary method

Beiji SHI1,2, Xiaolei YANG1,3, Guodong JIN1,2, Guowei HE1,2, Shizhao WANG1,2   

  1. 1. The State Key Laboratory of Nonlinear Mechanics(LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    2. School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Department of Civil Engineering, College of Engineering and Applied Sciences, Stony Brook University, New York 11794, U. S. A
  • 收稿日期:2018-06-25 修回日期:2018-08-08 出版日期:2019-03-01 发布日期:2019-03-01
  • 通讯作者: Shizhao WANG E-mail:wangsz@lnm.imech.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Nos. 91752118, 11672305, 11232011, and 11572331), the Strategic Priority Research Program (No. XDB22040104), and the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (No. QYZDJ-SSWSYS002)

Wall-modeling for large-eddy simulation of flows around an axisymmetric body using the diffuse-interface immersed boundary method

Beiji SHI1,2, Xiaolei YANG1,3, Guodong JIN1,2, Guowei HE1,2, Shizhao WANG1,2   

  1. 1. The State Key Laboratory of Nonlinear Mechanics(LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    2. School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Department of Civil Engineering, College of Engineering and Applied Sciences, Stony Brook University, New York 11794, U. S. A
  • Received:2018-06-25 Revised:2018-08-08 Online:2019-03-01 Published:2019-03-01
  • Contact: Shizhao WANG E-mail:wangsz@lnm.imech.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 91752118, 11672305, 11232011, and 11572331), the Strategic Priority Research Program (No. XDB22040104), and the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (No. QYZDJ-SSWSYS002)

摘要: A novel method is proposed to combine the wall-modeled large-eddy simulation (LES) with the diffuse-interface direct-forcing immersed boundary (IB) method. The new developments in this method include:(i) the momentum equation is integrated along the wall-normal direction to link the tangential component of the effective body force for the IB method to the wall shear stress predicted by the wall model; (ii) a set of Lagrangian points near the wall are introduced to compute the normal component of the effective body force for the IB method by reconstructing the normal component of the velocity. This novel method will be a classical direct-forcing IB method if the grid is fine enough to resolve the flow near the wall. The method is used to simulate the flows around the DARPA SUBOFF model. The results obtained are well comparable to the measured experimental data and wall-resolved LES results.

关键词: heat treatment, phase transformation, temperature field, wall model, diffuse-interface, immersed boundary (IB) method, large-eddy simulation (LES)

Abstract: A novel method is proposed to combine the wall-modeled large-eddy simulation (LES) with the diffuse-interface direct-forcing immersed boundary (IB) method. The new developments in this method include:(i) the momentum equation is integrated along the wall-normal direction to link the tangential component of the effective body force for the IB method to the wall shear stress predicted by the wall model; (ii) a set of Lagrangian points near the wall are introduced to compute the normal component of the effective body force for the IB method by reconstructing the normal component of the velocity. This novel method will be a classical direct-forcing IB method if the grid is fine enough to resolve the flow near the wall. The method is used to simulate the flows around the DARPA SUBOFF model. The results obtained are well comparable to the measured experimental data and wall-resolved LES results.

Key words: heat treatment, phase transformation, temperature field, immersed boundary (IB) method, wall model, large-eddy simulation (LES), diffuse-interface

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