Accession Number : AD0696652

Title :   ISOLATION OF THE CONTRIBUTION OF SHIP FOREBODIES TO WAVE RESISTANCE.

Descriptive Note : Final rept.,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s) : Mercier,John A.

Report Date : MAY 1969

Pagination or Media Count : 35

Abstract : The report describes an attempt to isolate the contribution of the forebody of a ship to the wave resistance. Although the net resistance of the forebody of a surface ship model is successfully evaluated, it is found that the component of pressure drag due to the local free-surface disturbance is a large fraction of the total and that, consequently, the resistance associated with propagated waves cannot be separated experimentally. A comparison of theoretically computed and experimentally evaluated wave-making resistance, for a case in which viscous boundary-layer influences do not play an important role, cannot be carried out under this procedure. A brief discussion of other experiments conducted to evaluate forebody drag is included. Mention is made of other recent efforts to correlate experimental pressure measurements with theoretical results. (Author)

Descriptors :   (*SHIPS, *DRAG), HYDRODYNAMICS, SHIP MODELS, SHIP STRUCTURAL COMPONENTS, OCEAN WAVES, SKIN FRICTION, BOUNDARY LAYER

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE