| Large Eddy Simulation of Separated Flows on Unconventionally Coarse Grids | |
| Bin, Yuanwei1,2; Park, George I3; Lv Y(吕钰)4; Yang, Xiang IA1 | |
| Corresponding Author | Park, George I.([email protected]) |
| Source Publication | JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
 |
| 2024-09-01 | |
| Volume | 146Issue:9Pages:13 |
| ISSN | 0098-2202 |
| Abstract | We examine and benchmark the emerging idea of applying the large eddy simulation (LES) formalism to unconventionally coarse grids where Reynolds-averaged Navier-Stokes (RANS) would be considered more appropriate at first glance. We distinguish this idea from very large eddy simulation and detached eddy simulation, 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, backward-facing step, and jet in cross flow. We conduct direct numerical simulation (DNS), proper LES on LES grids, LES on RANS-quality 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. |
| DOI | 10.1115/1.4064851 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001274879400006 |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Mechanical |
| Funding Project | National Natural Science Foundation of China[91752202] ; Directorate for Engineering[2241730] |
| Funding Organization | National Natural Science Foundation of China ; Directorate for Engineering |
| Classification | Q3 |
| Ranking | 3 |
| Contributor | Park, George I. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96194 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA; 2.Peking Univ, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China; 3.Univ Penn, Mech Engn & Appl Mech, Philadelphia, PA 19104 USA; 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Bin, Yuanwei,Park, George I,Lv Y,et al. Large Eddy Simulation of Separated Flows on Unconventionally Coarse Grids[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,2024,146,9,:13.Rp_Au:Park, George I. |
| APA | Bin, Yuanwei,Park, George I,吕钰,&Yang, Xiang IA.(2024).Large Eddy Simulation of Separated Flows on Unconventionally Coarse Grids.JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,146(9),13. |
| MLA | Bin, Yuanwei,et al."Large Eddy Simulation of Separated Flows on Unconventionally Coarse Grids".JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 146.9(2024):13. |
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