Accession Number : AD0738932

Title :   Experimental Investigation of Forced Ventilated Cavities on Hydrofoils of Various Chord Lengths and Planforms.

Descriptive Note : Final rept. Nov 67-Dec 68,

Corporate Author : LOCKHEED MISSILES AND SPACE CO SUNNYVALE CALIF

Personal Author(s) : Waid,Robert L.

Report Date : DEC 1968

Pagination or Media Count : 81

Abstract : An experimental program was conducted in the Lockheed underwater missile facility to determine the effects of velocity, ambient pressure and model parameters on the characteristics of forced ventilated cavities. The lift and drag forces and airflow requirements were determined for submerged hydrofoils of aspect ratio 3:1 with rectangular, tapered and triangular planforms. Also determined was the cavity length, vortex core size, reentrant jet penetration, and size of the shed wake. The dominance of the reentrant jet mixing on the entrainment rate for a wide range of ventilation coefficients is illustrated.

Descriptors :   (*CAVITATION, HYDROFOILS), LIFT, DRAG, VENTILATION, HYDRODYNAMIC CONFIGURATIONS, VORTICES, WAKE, JET MIXING FLOW, DATA PROCESSING, MODEL TESTS

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE