Flows around bodies with knuckles are studied with an ultimate goal of predicting changes in resistance of a simplified form ship with knuckles. As a first step, an analytical solution for the two-dimensional flow past a square is derived and compared with numerical results. The analysis is then extended to a very simple three-dimensional body with knuckles. Near the knuckle, the velocity potential changes rapidly; a pseudo-potential difference is demonstrated to exist when the knuckle is not aligned with a streamline. Finally, a method to calculate the pseudo-potential difference is established and applied to ship hulls. Comparisons between experimental results and the calculations are made to relate the potential differences to changes in drag of three simplified-form ships.


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    Title :

    Advanced approach to a design of simplified hull forms


    Additional title:

    Verbesserte Methode zur Konstruktion von vereinfachten Rumpfformen


    Contributors:

    Publication date :

    1982


    Size :

    116 Seiten


    Type of media :

    Theses


    Type of material :

    Print


    Language :

    English




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