Interactions of a flexible insert in ideal open and channel flows
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Methods to study the behaviour of a flexible insert comprising one wall of inviscid open and channel flows are developed. Small insert deflections, transient growth and large insert deflections are considered. Findings include; (i) reducing channel width will cause flow-induced surface instabilities to occur at lower flow velocities, (ii) large-amplitude deflections are possible before instability onset via transient growth and (iii) the amplitude of instability induced surface oscillations increases as channel height decreases.
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Burke, Meagan Alison; Lucey, A.; Howell, Richard; Elliott, Novak (2014)A hybrid of computational and theoretical methods is extended and used to investigate the instabilities of a flexible surface inserted into one wall of an otherwise rigid channel conveying an inviscid flow. The computational ...
Lai, Lawrence; Lucey, Anthony; Elliott, Novak (2012)In this paper we consider a fluid-conveying channel with a compliant insert undergoing large amplitude flow-induced deformations. The objective is to assess the suitability of an open source finite element library oomph-lib ...
Lai, L.S.H.; Lucey, Anthony; Elliott, Novak (2012)We consider a fluid-conveying channel with a compliant insert, or wall, undergoing flow-induced deformations. The objective is to understand the mechanism that can cause selfexcited oscillations of a fundamental system ...