Accession Number : ADP003041

Title :   Computing Wave Resistance and Wave Profile for Six Different Hull Forms,

Corporate Author : MEMORIAL UNIV OF NEWFOUNDLAND ST JOHN'S

Personal Author(s) : Hsiung,C. C. ; Ge,W. ; Chuang,J. M.

Report Date : 17 NOV 1983

Pagination or Media Count : 32

Abstract : Computations have been performed for six given hull forms. In the wave resistance computations both the tent function method and the thin-ship-panel method based on the thin-ship theory, and the Guilloton's method have been employed for the Wigley hull and the Series 60 Block 60. The thin-ship theory has also been applied to the wave resistance computations for the strut-like hull form and the vertical cylinders. The wave resistance of the fully-submerged body was computed by the line-source distribution method. The wave profile computations were carried out only for the Wigley hull and the Series 60 Block 60. The thin-ship-panel method and the Guilloton's method were used in the above cases. All above calculations were performed for the condition when neither sinkage nor trim is permitted. Computed results for six hull forms are provided and the corresponding numerical values are tabulated. The results computed by the tent function method and the thin-ship-panel method are almost identical, as expected, since they are all based onb the thin-ship theory. Guilloton's method shows improvement by reducing the unwanted peak near Froude number 0.3. The method of computation for the strut-like hull form and vertical cylinders was checked with the results calculated by Havelock. The computed results for the submerged spheroid are somewhat lower than Farell's data.

Descriptors :   *Ship hulls, *Water waves, Mathematical prediction, Resistance, Computations, Profiles, Transformations(Mathematics), Thinness, Cylindrical bodies, Struts, Underwater, Distribution, Sources, Two dimensional flow, Canada

Distribution Statement : APPROVED FOR PUBLIC RELEASE