| Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction | |
| Zhang XL(张鑫磊)1,2; Ge Ming-Ming3; Zhang Guang-Jian1,3; Coutier-Delgosha Olivier1,3 | |
| Corresponding Author | Coutier-Delgosha, Olivier([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
 |
| 2021-03-01 | |
| Volume | 33Issue:3Pages:13 |
| ISSN | 1070-6631 |
| Abstract | 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. |
| DOI | 10.1063/5.0041463 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000632900400001 |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86333 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Univ Lille, LMFL Lab Mecan Fluides Lille Kampe Feriete, Arts & Met ParisTech, CNRS,ONERA,Cent Lille,FRE 2017, F-59000 Lille, France; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Virginia Tech, Kevin T Crofton Dept Aerosp & Ocean Engn, Blacksburg, VA 24060 USA |
| Recommended Citation 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. |
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| Jp2021150.pdf（3965KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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