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| A turbulence wall layer model for large eddy simulation using immersed boundary method |
| Received:July 17, 2012 Revised:December 25, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201306013 |
| KeyWord:wall layer model immersed boundary method large eddy simulation |
| Author | Institution |
| 及春宁 |
天津大学 水利工程仿真与安全国家重点实验室, 天津 |
| 黄继露 |
天津大学 水利工程仿真与安全国家重点实验室, 天津 |
| 肖忠 |
天津大学 水利工程仿真与安全国家重点实验室, 天津 |
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| Abstract: |
| A novel turbulence wall layer model suitable for large eddy simulation using immersed boundary method is presented based on the hypothesis of constant shear stress in the near wall region.A slip velocity is introduced to modify the wall shear stress calculated using a linear velocity profile on the purpose of verifying the Werner-Wengle model.Results from the simulations of high-Re turbulent flow over a plate and in a pipe show that the velocity profile obtained using the wall layer model agrees well with the experimental data,which provides strong evidences of the good accuracy and fidelity of the method.Simulations with different relative positions of the Eulerian/Lagrangian grids were carried out and their influence on the accuracy was investigated.Robustness and the feature of switching on/off automatically according to the surrounding flow state and grid resolutions of the model were confirmed. |