Resistance experiments with a double parabolic model in a dilute polymer solution, show that large reductions in skin friction coefficient have negligible effect on the wave making resistance. Guilloton has shown how the real form which corresponds to a 'linearised' hull may be found for an inviscid fluid. By an extension of this process, it is possible to obtain any required arbitrary hull. Using this extension, the wave making properties, the pressure distribution, sinkage and trim of the double parabolic model have been calculated at a number of speeds. These calculated values have been compared with the experimental results previously published by Shearer and Cross. The comparison suggests that the Guilloton transformation avoids the error involved in relaxing the linearised conditions and so avoids the necessity of subsequent empirical corrections. There is some mention of blockage effects and of the limitations in the use of polymer solutions for general study of ship resistance.

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  • Corporate Authors:

    Royal Institution of Naval Architects

    10 Upper Belgrave Street
    ,   United States 
  • Authors:
    • Emerson, A
  • Publication Date: 1967-7

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  • Accession Number: 00057141
  • Record Type: Publication
  • Source Agency: Texas A&M University, College Station
  • Files: TRIS
  • Created Date: Aug 16 1974 12:00AM