Impulsively excited disturbances in non-uniform boundary layers

Davies, Christopher ORCID: https://orcid.org/0000-0002-5592-9541, Thomas, Christian and Ramage, Alexander 2016. Impulsively excited disturbances in non-uniform boundary layers. Presented at: 20th Australasian Fluid Mechanics Conference, University of Western Australia, Perth, Australia, December 2016. Proceedings of the 20th Australasian Fluid Mechanics Conference. Australasian Fluid Mechanics Society,

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Abstract

Results will be reviewed for the linearized disturbance impulse response of non-uniform boundary layers. Two distinct forms of boundary layer non-uniformity have been studied. First,we consider the global behaviour of impulsively excited disturbances in temporally steady rotating-disc boundary layers, where there is a spatial inhomogeneity which stems from the radially increasing circumferential velocity. We then consider the oscillatory Stokes layer that is driven by the time-periodic in-plane motion of a bounding flat plate. This provides a second type of boundary layer non-uniformity, which allows us to address the effects of base-flow unsteadiness upon the global development of disturbances.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Mathematics
Subjects:	Q Science > QA Mathematics
Publisher:	Australasian Fluid Mechanics Society
ISBN:	978-1-74052-377-6
Funders:	Australian Research Coun- cil (Discovery Project Grant) and the UK Engineering and Phys- ical Sciences Research Council (Funded Research Studentship)
Related URLs:	Organisation
Last Modified:	06 Jan 2024 04:51
URI:	https://orca.cardiff.ac.uk/id/eprint/100901

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