The Performance Gains of Using Wide. Flush Boundary Layer Inlets on Water-Jet Propelled Craft

Abstract

The application of a wide, flush inlet on a water-jet-propelled craft was investigated to determine performance gains from using primarily low momentum boundary layer flow for producing the propulsion jet. A method of predicting the boundary layer conditions, the pump size, and the overall water- jet system performance is given. Improvement in overall system efficiency or propulsive coefficient of 10% to 12% over conventional flush inlets is predicted for a planing craft application.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1976
Accession Number
ADA021987

Entities

People

  • David W Taylor
  • John G. Purnell

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Centrifugal Pumps
  • Efficiency
  • Flow
  • Flow Rate
  • Fluid Mechanics
  • Free Stream
  • Froude Number
  • Gas Turbines
  • Layers
  • Marine Engineering
  • Propulsion Systems
  • Three Dimensional
  • Water Jets
  • Waterjet Propulsion

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Marine Propulsion Engineering and Naval Architecture
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers