Accession Number : ADA001697

Title :   Tunnel Hull Cavitation and Propeller Induced Pressure Investigation

Descriptive Note : Final rept.

Corporate Author : DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT

Personal Author(s) : Peck, James G.

PDF Url : ADA001697

Report Date : NOV 1974

Pagination or Media Count : 37

Abstract : Cavitation performance of two propellers at different hull clearance-to-diameter ratios in a tunnel hull model are presented, as well as the propeller-induced pressures measured in the tunnel wall. Cavitation performance of the two propellers in uniform flow is also included. The propellers operating in the tunnel hull were found to be more efficient than in uniform flow. Predominate features of the induced pressure measurements were the blade-frequency harmonics. There was no evidence of flow separation on the tunnel hull model at simulated ship speeds of 45 knots.

Descriptors :   *SHIP HULLS, *CAVITATION, *MARINE PROPELLERS, MODEL BASINS, TORQUE, PROPELLER BLADES, THRUST, FLOW FIELDS

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE