Assessment of the shear-improved Smagorinsky model in laminar-turbulent   transitional channel flow

doi:10.1080/14685248.2015.1043131

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	Assessment of the shear-improved Smagorinsky model in laminar-turbulent transitional channel flow
	Xia, Zhenhua ; Shi, Yipeng ; Zhao, Yaomin
刊名	JOURNAL OF TURBULENCE
	2015
关键词	shear-improved Smagorinsky model transitional channel flow LARGE-EDDY SIMULATION DIRECT NUMERICAL-SIMULATION BOUNDARY-LAYER-TRANSITION FLAT-PLATE SECONDARY INSTABILITY WALL CLOSURE
DOI	10.1080/14685248.2015.1043131
英文摘要	In this paper, the shear-improved Smagorinsky model (SISM) is assessed in a K-type transitional channel flow. Our numerical simulation results show that the original SISM model is still too dissipative to predict the transitional channel flow. Two former reported empirical correction approaches, including a low-Reynolds-number correction and a shape-factor-based intermittency correction, are applied to further promote the capability of the SISM model in simulating the transition process. Numerical tests show that the shape-factor-based intermittency correction approach can correctly improve the transition-prediction capability of the SISM model, while the low-Reynolds-number correction approach fails. Furthermore, the shape-factor-based intermittency-corrected SISM model can capture the vortical structures during the transitional process very well and possesses the grid-insensitive characteristics.; National Natural Science Foundation of China [91130001, 11221061, 11302006]; National Science Foundation for Postdoctoral Scientists of China [2012M520109]; SCI(E); ARTICLE; xiazh@pku.edu.cn; 10; 925-936; 16
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421186]
专题	工学院
推荐引用方式 GB/T 7714	Xia, Zhenhua,Shi, Yipeng,Zhao, Yaomin. Assessment of the shear-improved Smagorinsky model in laminar-turbulent transitional channel flow[J]. JOURNAL OF TURBULENCE,2015.
APA	Xia, Zhenhua,Shi, Yipeng,&Zhao, Yaomin.(2015).Assessment of the shear-improved Smagorinsky model in laminar-turbulent transitional channel flow.JOURNAL OF TURBULENCE.
MLA	Xia, Zhenhua,et al."Assessment of the shear-improved Smagorinsky model in laminar-turbulent transitional channel flow".JOURNAL OF TURBULENCE (2015).