Experimental Study on Unsteady Ventilated Cavitating Flows around an Axisymmetric Body with Cavitator

WANG Fu-feng;WANG Guo-yu;HUANG Biao;HU Chang-li;LIU Tao-tao

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (3) : 333-339. DOI: 10.3969/j.issn.1000-1093.2014.03.007
Paper

Experimental Study on Unsteady Ventilated Cavitating Flows around an Axisymmetric Body with Cavitator

  • WANG Fu-feng, WANG Guo-yu, HUANG Biao, HU Chang-li, LIU Tao-tao
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Abstract

The unsteady characteristics of ventilated cavitating flows around axisymmetric body with a cavitator are addressed by using experimental methods. Cavities around the body are observed by means of a high-speed video camera in the different conditions. The results show that the shapes of the cavities increase with the increase in ventilation rate at the same Froude number, and they develops from the free cavities to the supercavities. In the supercavitating flow stage, a smooth and clear interface exists between main stream and supercavitating region. The cavity shapes decrease with the increase in Froude number at the same ventilation rate. The ventilated air doesn’t form a big bubble because the air flows to downstream of flow field with the high speed flow. The unsteady characteristics can be observed in ventilated cavitating flow field. The velocity of re-entrant jet increases with the increase in ventilation rate.

Key words

fluid mechanics / ventilated cavitation / axisymmetric body / high-speed flow visualization technology

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WANG Fu-feng, WANG Guo-yu, HUANG Biao, HU Chang-li, LIU Tao-tao. Experimental Study on Unsteady Ventilated Cavitating Flows around an Axisymmetric Body with Cavitator. Acta Armamentarii. 2014, 35(3): 333-339 https://doi.org/10.3969/j.issn.1000-1093.2014.03.007

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