The purpose of this First International Conference was to present new results in the field of numerical ship hydrodynamics and to call attention to new computer techniques that can be used to attack problems in the areas of free surface flows, cavity flows, and viscous/boundary layer flows. Discussed are the free surface, origin of ship waves and wave resistance, and also the dominant factor in the study of the motion of ships at sea. If the free boundary condition can be applied in a linearized approximation, analytical formulae can be widely applied, such as in thin or slender ship theory. However, the limitations of the approximations readily become apparent. A second serious simplification of the theory is the absence of viscosity. The frictional component of ship resistance can only be obtained by empirical methods and extrapolation procedures. The structure of the wake behind the hull, which is of dominant importance for the prediction of propeller behaviour can only be determined by measurements, which are mostly performed at model scale. Theoretical information on this wake could follow from calculations of the turbulent boundary layer around a ship hull. A second problem, which belongs to the subject of numerical methods in ship hydrodynamics is the calculation of the pressure distribution on propellers, which is coupled to cavitation effects on the blades.


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    Title :

    First International Conference on Numerical Ship Hydrodynamics Held in Gaithersburg, Maryland on 20-22 October 1975


    Contributors:
    J. W. Schot (author) / N. Salvesen (author)

    Publication date :

    1975


    Size :

    742 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Proceedings - First International Conference on Numerical Ship Hydrodynamics, [held in Gaithersburg, Maryland on] 20 - 22 October 1975

    International Conference on Numerical Ship Hydrodynamics / David W. Taylor Naval Ship Research and Development Center, Bethesda, Md. | TIBKAT | 1975



    Proceedings - Second International Conference on Numerical Ship Hydrodynamics, [held in Berkeley on] September 19 - 21, 1977

    International Conference on Numerical Ship Hydrodynamics / David W. Taylor Naval Ship Research and Development Center, Bethesda, Md. | TIBKAT | 1977