LARGE-EDDY SIMULATION OF SEPARATED FLOWS ON UNCONVENTIONALLY COARSE GRIDS
文献类型：会议论文
| 作者 | Bin, Yuanwei4; Park George I.; Lv Y(吕钰); Yang, Xiang I. A. |
| 出版日期 | 2023 |
| 会议日期 | OCT 29-NOV 02, 2023 |
| 会议地点 | New Orleans, LA |
| 关键词 | Turbulence Modeling Numerical Simulations Computational Fluid Dynamics |
| 英文摘要 | We examine and benchmark the emerging idea of applying the large-eddy simulation (LES) formalism to unconventionally coarse grids where RANS would be considered more appropriate at first glance. We distinguish this idea from very-large-eddy-simulation (VLES) and detached-eddy-simulation (DES), which require switching between RANS and LES formalism. LES on RANS grid is appealing because first, it requires minimal changes to a production code; second, it is more cost-effective than LES; third, it converges to LES; and most importantly, it accurately predicts flows with separation. This work quantifies the benefit of LES on RANS-like grids as compared to RANS on the same grids. Three canonical cases are considered: periodic hill, backwardfacing step, and jet in cross flow. We conduct direct numerical simulation (DNS), proper LES on LES grids, LES on RANSquality grids, and RANS. We show that while the LES solutions on the RANS-quality grids are not grid converged, they are twice as accurate as the RANS on the same grids. |
| 资助机构 | NNSFC [91752202]; NSF |
| 会议录 | PROCEEDINGS OF ASME 2023 INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, IMECE2023, VOL 9
 |
| 语种 | 英语 |
| ISBN号 | 978-0-7918-8766-0 |
| WOS记录号 | WOS:001216754200018 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97021]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Park, George I.] Univ Penn, Mech Engn & Appl Mech, Philadelphia, PA 19104 USA 3.Peking Univ, State Key Lab Turbulence & Complex Syst, Beijing, Peoples R China 4.[Bin, Yuanwei; Yang, Xiang I. A.] Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA |
| 推荐引用方式 GB/T 7714 | Bin, Yuanwei,Park George I.,Lv Y,et al. LARGE-EDDY SIMULATION OF SEPARATED FLOWS ON UNCONVENTIONALLY COARSE GRIDS[C]. 见:. New Orleans, LA. OCT 29-NOV 02, 2023. |
入库方式： OAI收割
来源：力学研究所
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