Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows

doi:10.1007/s10409-020-00960-5

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows
	Qi H(齐涵)1,2; Li XL(李新亮)1,2; Yu ZP(于长平)1
刊名	ACTA MECHANICA SINICA
	2020-06-03
页码	9
关键词	Large-eddy simulation Subgrid-scale model Rotating turbulent channel flow
ISSN号	0567-7718
DOI	10.1007/s10409-020-00960-5
通讯作者	Yu, Changping(cpyu@imech.ac.cn)
英文摘要	A new subgrid-scale (SGS) stress model is proposed for rotating turbulent flows, and the new model is based on the traceless symmetric part of the square of the velocity gradient tensor and the symmetric part of the vorticity gradient tensor (or the so-called vorticity strain rate tensor). The new subgrid-scale stress model is taken into account the effect of the vortex motions in turbulence, which is reflected on the anti-symmetric part of the velocity gradient tensor. In addition, the eddy viscosity of the new model reproduces the proper scaling as O(y(3)) near the wall. Then, the new SGS model is applied in large-eddy simulation of the spanwise rotating turbulent channel flow. Different simulating cases are selected to test the new model. The results demonstrate that the present model can well predict the mean velocity profiles, the turbulence intensities, and the rotating turbulence structures. In addition, it needs no a second filter, and is convenient to be used in the engineering rotational flows. Graphic abstract
分类号	二类
资助项目	National Natural Science Foundation of China[91852203] ; National Natural Science Foundation of China[11472278] ; National Key Research and Development Program of China[2016YFA04-01200] ; Science Challenge Project[TZ2016001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC01000000]
WOS关键词	SPANWISE ROTATION ; CHANNEL
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000537371900004
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences
其他责任者	Yu, Changping
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/82122]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qi H,Li XL,Yu ZP. Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows[J]. ACTA MECHANICA SINICA,2020:9.
APA	齐涵,李新亮,&于长平.(2020).Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows.ACTA MECHANICA SINICA,9.
MLA	齐涵,et al."Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows".ACTA MECHANICA SINICA (2020):9.