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Three-dimensional inviscid waves in buoyant boundary layer flows


Denier, JP and Stott, JAK and Bassom, AP, Three-dimensional inviscid waves in buoyant boundary layer flows, Fluid Dynamics Research, 28, (2) pp. 89-109. ISSN 0169-5983 (2001) [Refereed Article]

DOI: doi:10.1016/S0169-5983(00)00019-8


The stability of weakly three-dimensional buoyancy-driven boundary layers to travelling waves is considered. It is shown that in the absence of crossflow inviscid modes are unstable and, as the degree of crossflow is increased, the short waves are the first to be stabilised longer waves require an enhanced level of three-dimensionality of the basic flow for stabilisation. A combination of asymptotic and numerical techniques are used to provide a complete description of the inviscid modes over the whole wavenumber spectrum. The study is also extended to consider pure vortex "roll-cell" modes which can exist within unstably stratified (buoyancy driven) flows and these are found to stabilise in the presence of crossflow.

Item Details

Item Type:Refereed Article
Research Division:Mathematical Sciences
Research Group:Applied mathematics
Research Field:Theoretical and applied mechanics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the mathematical sciences
UTAS Author:Bassom, AP (Professor Andrew Bassom)
ID Code:107369
Year Published:2001
Web of Science® Times Cited:2
Deposited By:Mathematics and Physics
Deposited On:2016-03-11
Last Modified:2016-07-08

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