Research Interests: Computational Mechanics and Biomechanics

Many fluid conveying vessels in the human body are elastic and deform substantially in response to the forces that the fluid exerts on them. Since any change to the vessel's geometry directly affects the fluid flow, the behaviour of such systems is often dominated by strong fluid-structure interactions which can give rise to many interesting phenomena (such as flow limitation or self-excited oscillations).

Example of flow in a strongly collapsed tube.

Physiological examples include: the flow of blood in the veins and arteries; the flow of air in the airways of the lung; surface tension driven fluid-elastic instabilities of the thin liquid film which lines the airways. Further examples for fluid-structure interaction problems can be found in many engineering applications (flutter instabilities in aerodynamics and in pipe flow; advanced fluid-elastic damping elements; design of efficient sails). The most famous example of flow induced self-excited oscillations in an engineering structure is probably the Tacoma bridge disaster.

Current research is concerned with the mathematical modelling and computational solution of the large-displacement fluid-structure interaction problems which arise in such systems. By its nature this research spans a wide range of disciplines (fluid and solid mechanics, mathematical modelling, the development of novel computational methods as well as analytical work and - occasionally - experimental investigations). Collaborations with academic and industrial research groups in the UK and overseas exist.

Page last modified: April 3, 1998

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