An improved modeling approach for riblet effects based on Reynolds-averaged Navier-Stokes turbulence model
文献类型：期刊论文
| 作者 | Wang YT(王业腾)1,2; Sun ZX(孙振旭)2; Guo DL(郭迪龙)2; Ju SJ(鞠胜军)2; Yang GW(杨国伟)2 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 37期号:7页码:14 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0276253 |
| 通讯作者 | Sun, Zhenxu(sunzhenxu@imech.ac.cn) |
| 英文摘要 | Micro riblet surfaces have demonstrated significant potential for reducing skin-friction drag in turbulent boundary layers, making them attractive candidates for aerodynamic optimization in high-speed transportation. To address the high computational cost arising from the large disparity between riblet scale and engineering scale in numerical simulations, modeling riblet effects in Reynolds-averaged Navier-Stokes (RANS) computations has become an effective strategy. However, existing methods often suffer from excessive mesh sensitivity and overprediction of drag increases for oversized riblets, limiting their engineering applicability. The present study proposes an improved RANS-based modeling approach for simulating riblet effects. The core of the model involves a correction to the boundary condition of the specific dissipation rate (omega), extending a formulation previously introduced by other researchers. The modeling method consists of three key components. First, an empirical relation is established between riblet geometry and the riblet-induced velocity profile shift in the logarithmic region, accounting for variations in the aspect ratio of V-shaped riblets and accurately capturing both drag-reducing and drag-increasing regimes. Second, a boundary correction for omega is developed through numerical experiments to reproduce the velocity profile shift, incorporating a mesh-sensitivity analysis and introducing a correction factor related to grid resolution. Third, a pressure-gradient correction factor is introduced to simulate the influence of adverse pressure gradients on riblet performance. The proposed method is implemented in the OpenFOAM solver and validated through simulations of flat-plate boundary layers and a wind turbine airfoil, demonstrating good agreement with experimental results. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; DRAG REDUCTION ; BOUNDARY-LAYER ; GROOVED SURFACE ; FLOW |
| 资助项目 | China Railway10.13039/100015860[K2023J047] ; China National Railway Group Science and Technology Program |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001533629300034 |
| 资助机构 | China Railway10.13039/100015860 ; China National Railway Group Science and Technology Program |
| 其他责任者 | 孙振旭 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/102301]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Univ Chinese Acad Sci UCAS, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang YT,Sun ZX,Guo DL,et al. An improved modeling approach for riblet effects based on Reynolds-averaged Navier-Stokes turbulence model[J]. PHYSICS OF FLUIDS,2025,37(7):14. |
| APA | 王业腾,孙振旭,郭迪龙,鞠胜军,&杨国伟.(2025).An improved modeling approach for riblet effects based on Reynolds-averaged Navier-Stokes turbulence model.PHYSICS OF FLUIDS,37(7),14. |
| MLA | 王业腾,et al."An improved modeling approach for riblet effects based on Reynolds-averaged Navier-Stokes turbulence model".PHYSICS OF FLUIDS 37.7(2025):14. |
入库方式： OAI收割
来源：力学研究所
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