| Improvement of Baldwin-Lomax turbulence model for supersonic complex flows | |
Zhao R(赵瑞); Yan C(阎超); Yu J(于剑); Li XL(李新亮) ; Yan, C (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
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| Source Publication | CHINESE JOURNAL OF AERONAUTICS
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| 2013-06 | |
| Volume | 26Issue:3Pages:529–534 |
| ISSN | 1000-9361 |
| Abstract | Entropy represents the dissipation rate of energy. Through direct numerical simulation (DNS) of supersonic compression ramp flow, we find the value of entropy is monotonously decreasing along the wall-normal direction no matter in the attached or the separated region. Based on this feature, a new version of Baldwin-Lomax turbulence model (BL-entropy) is proposed in this paper. The supersonic compression ramp and cavity-ramp flows in which the original Baldwin-Lomax model fails to get convergent solutions are chosen to evaluate the performance of this model. Results from one-equation Spalart-Allmaras model (SA) and two-equation Wilcox κ-ω model are also included to compare with available experimental and DNS data. It is shown that BL-entropy could conquer the essential deficiency of the original version by providing a more physically meaningful length scale in the complex flows. Moreover, this method is simple, computationally efficient and general, making it applicable to other models related with the supersonic boundary layer. |
| Keyword | Baldwin-lomax Model Boundary Layers Computational Aerodynamics Entropy Supersonic Flows Turbulence Models |
| Subject Area | 流体力学 ; 湍流 |
| URL | 查看原文 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000321106800004 |
| Funding Organization | National Basic Research Program of China [2009CB724104]; Innovation Foundation of BUAA for Ph.D. Graduates [300521]; Academic New Artist Award of BUAA for Ph.D. Graduates |
| Department | LHD可压缩湍流 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47442 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Yan, C (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhao R,Yan C,Yu J,et al. Improvement of Baldwin-Lomax turbulence model for supersonic complex flows[J]. CHINESE JOURNAL OF AERONAUTICS,2013,26,3,:529–534. |
| APA | Zhao R,Yan C,Yu J,Li XL,&Yan, C .(2013).Improvement of Baldwin-Lomax turbulence model for supersonic complex flows.CHINESE JOURNAL OF AERONAUTICS,26(3),529–534. |
| MLA | Zhao R,et al."Improvement of Baldwin-Lomax turbulence model for supersonic complex flows".CHINESE JOURNAL OF AERONAUTICS 26.3(2013):529–534. |
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