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An Attribution of Cavitation Resonance: Volumetric Oscillations of Cloud

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Abstract

In order to further verify the proposed theory of cavitation resonance, as well as to proceed the investigations into microscopic level, a series of studies are being carried out on the Warwick venturi. The analysis of the oscillation characteristics of the cavitation resonance has conclusively verified the macro-mechanism proposed through previous studies on other cavitating flows by the authors. The initial observations using high-speed photographic approach have revealed a new attribution of cavitation resonance. That is, the volumetric oscillation of cavitation cloud is associated with the cavitation resonance, which is a collective behaviour of the bubbles in the cloud.

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Abbreviations

γ:

Propagation constant

σ:

Cavitation number, real part of the complex frequency/Laplace variable

ρ:

Liquid density

ω:

Imaginary part of the complex frequency/Laplace variable

A:

Cross section area of the pipe

a:

Sound speed

D:

Pipe diameter

f:

Frequency of pressure signal

g:

Gravitational acceleration

H:

Piezometric head

l:

Pipe length

pv :

Vapour pressure

p∞ :

Reference pressure

Q:

Flow discharge

s:

Complex frequency/Laplace variable

v:

Flow velocity

Zc :

Characteristic impedance

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Authors and Affiliations

  1. School of Engineering, University of Warwick, Coventry, CV4 7AL, UK

    Zhi-gang Zuo, Sheng-cai Li & Shuang Li

  2. Department of Thermal Engineering, Tsinghua University, Beijing, 100084, China

    Shu-hong Liu

  3. School of Power and Energy, Northwestern Polytechnical University, Xi’an, 710072, China

    Hui Chen

Authors
  1. Zhi-gang Zuo
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  2. Sheng-cai Li
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  3. Shu-hong Liu
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  4. Shuang Li
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  5. Hui Chen
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Corresponding author

Correspondence to Sheng-cai Li.

Additional information

Project supported by the EPSRC’S Warwick-IMRC of United Kingdom (Grant Nos.R.ESCM. 9001, 9004 and 9219).

Biography: ZUO Zhi-gang (1977-), Male, Ph. D.

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Zuo, Zg., Li, Sc., Liu, Sh. et al. An Attribution of Cavitation Resonance: Volumetric Oscillations of Cloud. J Hydrodyn 21, 152–158 (2009). https://doi.org/10.1016/S1001-6058(08)60132-8

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  • DOI: https://doi.org/10.1016/S1001-6058(08)60132-8

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