The test result on cavitation and cavitation damage in a cavitation tunnel are presented in this paper. The cavitator in the shape of 60 deg. symmetric wedge was mounted into the inlet of the working section of 20 x 40 x170mm3 in size. The velocities ranged from 8.5m/s to 13.5m/s. At first, the flow structure around the wedge was revealed by a Laser Doppler Velocimetry. Then, the fluctuating pressure signals induced by vortex cavitation were picked up by a micro-transducer. Cavitation erosion tests were just done at the velocity of 13.5m/s. The aim of this work is to investigate therelation between cavitation inception and flow structure and to explore the dependence of cavitation damage on cavitation intensity. The cavitationintensity which is defined as the power density per unit time can be regarded as the input of the test system. The intensity of cavitation damage is supposed to be the consumed power density per unit time and considered as the output of the system of test. The ratio of the output to the input is as the efficiency of the test system. The test results also show that the output is very small in quantity as compared with the input.


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    Title :

    A study on cavitation and cavitation damage in a cavitation tunnel


    Additional title:

    Untersuchung über Kavitation allgemein und Kavitationsschäden in einem Kavitationstunnel


    Contributors:
    Ji, Zhi-Ye (author)

    Published in:

    Publication date :

    1993


    Size :

    10 Seiten, 16 Bilder, 3 Tabellen, 6 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    A Study on Cavitation and Cavitation Damage in a Cavitation Tunnel

    Ji, Z. Y. / Chinese Society of Naval Architecture and Marine Engineering| SNAME| ASME | British Library Conference Proceedings | 1992


    Cavitation inception and damage

    Johnson, Jr., V.E. | Engineering Index Backfile | 1966


    Scaling of Cavitation Damage

    D. R. Stinebring / R. E. A. Arndt / J. W. Holl | AIAA | 1977


    Scaling of cavitation damage

    STINEBRING, D. | AIAA | 1977