The Mathematical Institute, University of Oxford, Eprints Archive

Inertial levitation

Ockendon, J. R. and Fitt, A. D. and Kozyreff, G. K. (2004) Inertial levitation. Journal of Fluid Mechanics, 508 . pp. 165-174.



We consider the steady levitation of a rigid plate on a thin air cushion with prescribed injection velocity. This injection velocity is assumed to be much larger than that in a conventional Prandtl boundary layer, so that inertial effects dominate. After applying the classical ‘blowhard’ theory of Cole & Aroesty (1968) to the two-dimensional version of the problem, it is shown that in three dimensions the flow may be foliated into streamline surfaces using Lagrangian variables. An example is given of how this may be exploited to solve the three-dimensional problem when the injection pressure distribution is known.

Item Type:Article
Subjects:A - C > Calculus of variations and optimal control
Research Groups:Oxford Centre for Industrial and Applied Mathematics
ID Code:223
Deposited By: John R. Ockendon
Deposited On:05 Apr 2006
Last Modified:29 May 2015 18:18

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