Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22556
Title: Investigation of plane mixing layer using large eddy simulation
Authors: Yang, WB
Zhang, HQ
Chan, CK 
Lau, KS
Lin, WY
Keywords: Convection velocity
Large eddy simulation
Large vortex structure
Mixing layer
Rate of shear
Self-similarity
Issue Date: 2004
Publisher: Springer
Source: Computational mechanics, 2004, v. 34, no. 5, p. 423-429 How to cite?
Journal: Computational mechanics 
Abstract: Spatially evolving turbulent mixing layers are investigated in this paper using large eddy simulation. The evolutions of large vortex structures are obtained, in which the processes of vortex roll up, growth, pairing and breaking up are shown in details. The simulated flow patterns agree well with experimental visualization results. Predicted results of mean properties of streamwise velocity, fluctuating velocity and Reynolds stress at different sections show good self-similarity and agree well with experimental measurements. Linear growth of the momentum thickness along the streamwise direction is then obtained, indicating that pairing and amalgamating of large vortex structures in plane mixing layers occur randomly in space and time. The effects of convection velocity and the rate of shear on the evolution of vortex structures, self-similarity as well as momentum thickness are also investigated. The rate of shear has a significant effect on the evolution of coherent structure and the slope of momentum thickness growth, while the convection velocity only affects the space interval of the adjoining vortices. The rate of shear and convection velocity have no significant effect on the nondimensional distributions of turbulence statistics. Selfsimilarities are therefore obtained for different rates of shear and convection velocities.
URI: http://hdl.handle.net/10397/22556
ISSN: 0178-7675
EISSN: 1432-0924
DOI: 10.1007/s00466-004-0588-7
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

17
Last Week
0
Last month
0
Citations as of Sep 9, 2017

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
1
Citations as of Sep 21, 2017

Page view(s)

40
Last Week
2
Last month
Checked on Sep 17, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.