Compressible effects modeling for turbulent cavitating flow in a small venturi channel: An empirical turbulent eddy viscosity correction

doi:10.1063/5.0041463

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	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-Ming 3; Zhang Guang-Jian 1,3; Coutier-Delgosha Olivier 1,3
通讯作者	Coutier-Delgosha, Olivier(ocoutier@vt.edu)
发表期刊	PHYSICS OF FLUIDS
	2021-03-01
卷号	33 期号:3 页码:13
ISSN	1070-6631
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.
DOI	10.1063/5.0041463
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000632900400001
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
论文分区	一类/力学重要期刊
力学所作者排名	1
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86333
专题	非线性力学国家重点实验室
作者单位	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
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.

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