| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Determination of the Minimum Wave Speed for the Modelling of Ventilated Cavitation |
| Ting Chen, Yu-Ning Zhang**, Xiao-Ze Du |
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education), North China Electric Power University, Beijing 102206
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| Cite this article: |
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Ting Chen, Yu-Ning Zhang, Xiao-Ze Du 2016 Chin. Phys. Lett. 33 116401 |
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Abstract Ventilated cavitation plays an important role on the drag reduction of underwater vehicles and surface ships. For the modelling of ventilated cavitation, the minimum speed of the pressure wave is a crucial parameter for the closure of the pressure-density coupling relationship. In this study, the minimum wave speed is determined based on a theoretical model coupling the wave equation and the bubble interface motion equation. The influences of several paramount parameters (e.g., frequency, bubble radius and void fraction) on the minimum wave speed are quantitatively demonstrated and discussed. Compared with the minimum wave speed in the traditional cavitation, values for the ventilated cavitation are much higher. The physical mechanisms for the above difference are briefly discussed with the suggestions on the usage of the present findings.
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Received: 22 July 2016
Published: 28 November 2016
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| PACS: |
64.70.fm
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(Thermodynamics studies of evaporation and condensation)
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47.35.Rs
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(Sound waves)
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47.55.Ca
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(Gas/liquid flows)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 51506051. |
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