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Fluid dynamics of the resonance tube

Published online by Cambridge University Press:  29 March 2006

E. Brocher ,
C. Maresca  and
M.-H. Bournay
E. Brocher
Affiliation:
Institut de Mécanique des Fluides de l'Université d'Aix-Marseille, Marseille, France
C. Maresca
Affiliation:
Institut de Mécanique des Fluides de l'Université d'Aix-Marseille, Marseille, France
M.-H. Bournay
Affiliation:
Institut de Mécanique des Fluides de l'Université d'Aix-Marseille, Marseille, France
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Abstract

Using a simplified wave-diagram and the gas-speed/sound-speed diagram, it is shown how the oscillations start and grow within a resonance tube. It is found that the oscillation amplitude tends to a limiting value which is obtained when the jet is fully swallowed by the tube during the phase of compression of the cycle. Experiments are carried out for jet Mach numbers from 0·1 up to 2. To achieve an adequate evacuation of the tube in the expansion phase, a thin cylindrical body must be used, which is laid along the axis of the jet to produce a wake and a correlative local deficiency of the kinetic energy of the jet. Measured amplitudes of pressure fluctuations are in good agreement with theoretical values.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 43 , Issue 2 , 28 August 1970 , pp. 369 - 384
Copyright
© 1970 Cambridge University Press

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References

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