A method based on rational mechanics is presented for predicting hydrodynamic forces and moments on a hull of arbitrary geometry as a reaction to the propeller-induced velocity field. This method assumes that the hull surface can be represented by a distribution of sources. The numerical procedure is adapted to the CDC 7600 or Cyber 176 digital computer which furnishes the strength of the source distribution over the hull and the vertical component of the propeller-induced hull force at blade frequency. The program is executed for two widely different cases for which experimental measurements are available: a spheroidal head in the presence of a 3-bladed propeller operating in uniform inflow, and a Series 60 hull model (V-form stern) driven by a 4-bladed propeller. Theoretical predictions show agreement with corresponding experimental measurements within 11 % for the body of revolution and 27 % for the surface ship. A new method has lately been devised which replaces the sources by a distribution of doublets, thus replacing the three components of normal velocity by the negative of the velocity potential which has no directivity. (Stoehr)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    A theoretical procedure for calculating propeller-induced hull forces


    Weitere Titelangaben:

    Ein theoretisches Verfahren zur Berechnung der durch die Schraube ausgeloesten Beanspruchung des Schiffsrumpfes


    Beteiligte:
    Tsakonas, S. (Autor:in) / Valentine, D.T. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1980


    Format / Umfang :

    56 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch




    Propeller-induces hull forces

    Breslin, J.P. | Tema Archiv | 1979


    Forces on submarine hull induced by propeller

    Chertock, G. | Engineering Index Backfile | 1965



    Hull disturbing forces due to propeller sources

    Kinns, R. | Online Contents | 2005


    Hull disturbing forces due to propeller sources

    Kinns, R. / Pim, C.D. | Tema Archiv | 2005