Large eddy simulation of unsteady shedding behavior in cavitating flows with time-average validation
文献类型：期刊论文
| 作者 | Li LM(李林敏); Li BK(李宝宽); Hu ZQ(胡志强) ; Lin Y(林扬); Cheung, Sherman C.P.
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| 刊名 | Ocean Engineering
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| 出版日期 | 2016 |
| 卷号 | 125页码:1-11 |
| 关键词 | Unsteady cavitating flows Large eddy simulation Time-average method Periodic shedding |
| ISSN号 | 0029-8018 |
| 产权排序 | 1 |
| 通讯作者 | 李宝宽 |
| 中文摘要 | Cavitation always leads to complex gas–liquid interactions and turbulence structures with multi-scale eddies and vortices. It usually involves cavity growth, break-off and collapse processes; posing great challenges in modeling. This paper focuses on modeling instantaneous cavitating flows using the large eddy simulation (LES) and validating the predictions against experimental data using the time-average method. The volume of fluid (VOF) model was adopted to describe phase equations and coupled with the Schnerr–Sauer cavitation model for describing the evaporation-condensation mass transfer. Simulations were performed to predict the unsteady cavitating flows of both the cylinder and Clark-Y hydrofoil configurations. Firstly, the mechanisms of cavity shedding, vapor cloud forming and collapsing were well revealed. The time-averaged pressure distribution and cavity length around the cylinder were in good agreement with experimental data. Moreover, the periodic cavity shedding and pressure fluctuation around the Clark-Y hydrofoil were also predicted. Different cavity patterns were clearly identified in a typical cycle, and the effect of cavity pattern on hydrodynamic forces was investigated. The computational results of cavity patterns, velocity profiles, drag and lift coefficients were compared with experimental results and good agreements were obtained. The present work provides a valid numerical modeling framework for various cavitating flows. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| 研究领域[WOS] | Engineering ; Oceanography |
| 关键词[WOS] | REENTRANT JET ; ISOTHERMAL CAVITATION ; NUMERICAL-SIMULATION ; SHEET CAVITATION ; CLOUD CAVITATION ; MODEL ; HYDROFOIL ; TRANSPORT ; DYNAMICS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000384860900001 |
| 源URL | [http://ir.sia.cn/handle/173321/19188]  |
| 专题 | 沈阳自动化研究所_海洋信息技术装备中心 |
| 推荐引用方式 GB/T 7714 | Li LM,Li BK,Hu ZQ,et al. Large eddy simulation of unsteady shedding behavior in cavitating flows with time-average validation[J]. Ocean Engineering,2016,125:1-11. |
| APA | Li LM,Li BK,Hu ZQ,Lin Y,&Cheung, Sherman C.P..(2016).Large eddy simulation of unsteady shedding behavior in cavitating flows with time-average validation.Ocean Engineering,125,1-11. |
| MLA | Li LM,et al."Large eddy simulation of unsteady shedding behavior in cavitating flows with time-average validation".Ocean Engineering 125(2016):1-11. |
入库方式： OAI收割
来源：沈阳自动化研究所
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