| Comparison of drag prediction using RANS models and DDES for the DLR-F6 configuration using high order schemes | |
Gan JY; Shen YQ(申义庆) ; Zha GC
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| Source Publication | 54th AIAA Aerospace Sciences Meeting |
| 2016 | |
| Conference Name | 54th AIAA Aerospace Sciences Meeting, 2016 |
| Conference Date | January 4, 2016 - January 8, 2016 |
| Conference Place | San Diego, CA, United states |
| Abstract | This paper compares the accuracy and robustness of steady state RANS, unsteady RANS, and DDES turbulence models with high order schemes for predicting the drag of the DLR-F6 configuration. The implicit time marching method with unfactored Gauss-Seidel line relaxation is used with a 5th order WENO finite difference scheme for Navier-Stokes equations. The viscous terms are discretized using a 4th order conservative central differencing. The effect of grid size on the accuracy of drag prediction by using the different turbulent models are conducted on the coarse, medium and fine mesh models at the same angle of attack. The coarse mesh has about 10 drag counts deviation from the experiment, the medium mesh has 28 counts, and the fine mesh has about 15 counts difference. The RANS method achieves almost the same results as URANS and DDES at angle of attack of 0.49. The DDES have the least deviation from the experimental drag result and the closest pressure distribution to the experiment in the trailing edge separation zone. However, since the DDES uses the same mesh as the RANS model in this paper, the DDES results should not be considered as conclusive. A more rigorous mesh refinement study for the DDES is in progress. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA, All rights reserved. |
| Keyword | Central Differencing Drag Prediction Finite Difference Scheme High Order Scheme Line Relaxation Mesh Refinement Trailing Edges Turbulent Models |
| Department | LHD气动布局优化与计算方法 |
| ISBN | 9781624103933 |
| URL | 查看原文 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/60154 |
| Collection | 高温气体动力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Gan JY,Shen YQ,Zha GC. Comparison of drag prediction using RANS models and DDES for the DLR-F6 configuration using high order schemes[C]54th AIAA Aerospace Sciences Meeting,2016. |
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| File Name/Size | DocType | Version | Access | License | ||
| Cp2016-039.pdf（555KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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