Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction
文献类型：期刊论文
| 作者 | Zhang XL(张鑫磊)2,3; Ge Ming-Ming1; Zhang Guang-Jian1,3; Coutier-Delgosha Olivier1,3 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 33期号:3页码:13 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0041463 |
| 通讯作者 | Coutier-Delgosha, Olivier(ocoutier@vt.edu) |
| 英文摘要 | The Reynolds-averaged Naviers-Stokes (RANS) method coupling with cavitation model is still a practical tool to predict cavitating flows, particularly in industrial applications, due to its computational efficiency. However, the compressibility effects induced by cavitation are not well considered in conventional RANS methods, which often causes the blockage of the reentrant jet and the total steadiness of the simulated cavity. To this end, modeling of compressibility effects becomes critical to predict the characteristics of unsteady cavitating flows. An empirical eddy viscosity correction [Reboudet al., "Two phase flow structure of cavitation: experiment and modeling of unsteady effects," in 3rd International Symposium on Cavitation CAV1998, Grenoble, France (1998), Vol. 26.] was proposed to consider the compressibility effects induced by cavitation. Although this modification is able to capture unsteady behaviors of cavitating flows in various configurations, it is still not fully analyzed in terms of the turbulent quantities, e.g., Reynolds shear stress. In this work, we investigate the effects of this compressibility correction on the Reynolds shear stress, by comparing with x-ray experimental data in a small Venturi channel. It is shown that the Reboud correction reduces the eddy viscosity in the entire cavity region, which improves the prediction of Reynolds shear stress near the wall significantly. However, the correction depends only on the simulated mixture density, leading to poor predictions near the phase interface where the simulated mixture density has large discrepancies. Based on the results, we propose an empirical eddy viscosity limiter to confine the original correction beneath the cavitating layer and demonstrate the merits of the proposed correction by comparing with experimental measurements. |
| 分类号 | 一类/力学重要期刊 |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000632900400001 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86332]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Virginia Tech, Kevin T Crofton Dept Aerosp & Ocean Engn, Blacksburg, VA 24060 USA 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Lille, LMFL Lab Mecan Fluides Lille Kampe Feriete, Arts & Met ParisTech, CNRS,ONERA,Cent Lille,FRE 2017, F-59000 Lille, France; |
| 推荐引用方式 GB/T 7714 | Zhang XL,Ge Ming-Ming,Zhang Guang-Jian,et al. Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction[J]. PHYSICS OF FLUIDS,2021,33(3):13. |
| APA | 张鑫磊,Ge Ming-Ming,Zhang Guang-Jian,&Coutier-Delgosha Olivier.(2021).Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction.PHYSICS OF FLUIDS,33(3),13. |
| MLA | 张鑫磊,et al."Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction".PHYSICS OF FLUIDS 33.3(2021):13. |
入库方式： OAI收割
来源：力学研究所
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