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The fluid mechanics of the aortic valve

Published online by Cambridge University Press:  28 March 2006

B. J. Bellhouse  and
L. Talbot
B. J. Bellhouse
Affiliation:
Department of Engineering Science, Oxford University
L. Talbot
Affiliation:
Department of Engineering Science, Oxford University Permanent address: University of California, Berkeley.
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Abstract

The closure mechanism of the human aortic valve is investigated experimentally with a rigid-walled model placed in a pulsatile water-tunnel. It is shown that the valve is controlled by a fluid feed-back system incorporating a stagnation point at the downstream end of each sinus and a trapped vortex within it, and that threequarters of the valve's closure is accomplished during forward flow, requiring only very little reversed flow to seal it. The experiments are complemented by solutions of the inviscid-flow equations, based on a Hill spherical vortex model.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 35 , Issue 4 , 10 March 1969 , pp. 721 - 735
Copyright
© 1969 Cambridge University Press

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References

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Bellhouse, B. J. & Bellhouse, F. H. 1968 Nature, Lond. 217, 86.
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Milne-Thomson, L. M. 1960 Theoretical Hydrodynamics, 4th ed. New York: Macmillan.
Valslva, A. M. 1740 Opera Postuma, Venice. (Latin.)