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
Distribution Statement : APPROVED FOR PUBLIC RELEASE