FANS Simulation of Propeller Wash at Navy Harbors (ESTEP Project ER-201031)

Abstract

Propeller wash induces high shear stresses on seafloor which may cause sediment resuspension in Department of Defense (DoD) harbors. To improve understanding of the sediment erosion, transport, dispersion, and re-deposition processes, it is desirable that advanced computational fluid dynamics models should be used to provide detailed resolution of the velocities and bottom shear stresses induced by the propeller wash in confined shallow water basins. In this study, the Finite-Analytic NavierStokes code was employed to solve the Reynolds-Averaged NavierStokes equations in conjunction with advanced near-wall turbulence model for several propeller-wash scenarios involving an Arleigh Burke-class destroyer with twin-screw propellers and a tugboat with two ducted propellers. This model enables us to evaluate the effect of water depth, ship speed, propeller rotating speed, and pier wall configuration on the propeller-induced shear stresses distributions.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2016
Accession Number
AD1013562

Entities

People

  • Hamn-ching Chen
  • Pei-fang Wang

Organizations

  • Naval Information Warfare Systems Command

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Department Of Defense
  • Eddies (Fluid Mechanics)
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Governments
  • Hydrodynamics
  • Mechanical Properties
  • Mechanics
  • Navy
  • Ship Hulls
  • Ship Sterns
  • Three Dimensional
  • United States Government
  • Uss Arleigh Burke

Readers

  • Aerodynamics.
  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Computational Fluid Dynamics (CFD)