Direct numerical simulation of transition and turbulence in compressible mixing layer

	Direct numerical simulation of transition and turbulence in compressible mixing layer
	Fu, DX ; Ma, YW ; Zhang, LB
	2000-04-01
发表期刊	SCIENCE IN CHINA SERIES A-MATHEMATICS
ISSN	1006-9283
卷号	43 期号:4 页码:421-429
摘要	The three-dimensional compressible Navier-Stokes equations are approximated by a fifth order upwind compact and a sixth order symmetrical compact difference relations combined with three-stage Ronge-Kutta method. The computed results are presented for convective Mach number Mc = 0.8 and Re = 200 with initial data which have equal and opposite oblique waves. From the computed results we can see the variation of coherent structures with time integration and full process of instability, formation of Lambda-vortices, double horseshoe vortices and mushroom structures. The large structures break into small and smaller vortex structures. Finally, the movement of small structure becomes dominant, and flow field turns into turbulence. It is noted that production of small vortex structures is combined with turning of symmetrical structures to unsymmetrical ones. It is shown in the present computation that the flow field turns into turbulence directly from initial instability and there is not vortex pairing in process of transition. It means that for large convective Mach number the transition mechanism for compressible mixing layer differs from that in incompressible mixing layer.
关键词	compressible mixing layer transition turbulence compact scheme
语种	英语
WOS研究方向	Mathematics
WOS类目	Mathematics, Applied ; Mathematics
WOS记录号	WOS:000086306500010
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/15437
专题	计算数学与科学工程计算研究所
通讯作者	Fu, DX
作者单位	1.Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Computat Math & Specif Engn Comp, State Key Lab Sci & Engn Comp, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Fu, DX,Ma, YW,Zhang, LB. Direct numerical simulation of transition and turbulence in compressible mixing layer[J]. SCIENCE IN CHINA SERIES A-MATHEMATICS,2000,43(4):421-429.
APA	Fu, DX,Ma, YW,&Zhang, LB.(2000).Direct numerical simulation of transition and turbulence in compressible mixing layer.SCIENCE IN CHINA SERIES A-MATHEMATICS,43(4),421-429.
MLA	Fu, DX,et al."Direct numerical simulation of transition and turbulence in compressible mixing layer".SCIENCE IN CHINA SERIES A-MATHEMATICS 43.4(2000):421-429.