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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Secondary instability of two-dimensional coherent structures in shallow mixing
Secondary instability of two-dimensional coherent structures in shallow mixing
Author : LAM, MAN YUE(1), GHIDAOUI, MOHAMED S(2)
ABSTRACT
The secondary instability of two-dimensional coherent structures (2DCS) in shallow mixing layers is investigated. To this
end, secondary stability analysis is performed. The results are compared to nonlinear simulations of temporal shallow mixing
layers performed with a shallow water model. The results show that there are two modes of instability for 2DCS in shallow
mixing layers. By comparing stability analysis results with numerical simulations, it is suggested that the merging of 2DCS
in shallow mixing layers can be explained by the secondary instability of the 2DCS. The two modes of instability in the
secondary instability of 2DCS in shallow mixing layers correspond to the two merging mechanisms of 2DCS, namely the
pairing and shredding of 2DCS.
File Size : 841,881 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 19/08/2015
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