Propeller Analysis Using RANS/BEM Coupling Accounting for Blade Blockage

Abstract

A popular method for analyzing a propeller operating behind a ship is to couple a Reynolds-averaged Navier-Stokes (RANS) solution of the flow around the hull with a solution for the flow around the propeller calculated using the Boundary Element Method (BEM). In the RANS/BEM coupling procedure, it is important that both solvers agree on the upstream propeller induction. Failure to do so causes an under-prediction of the thrust and torque. A method of accounting for the blade blockage by adding source terms to the equation of continuity in the RANS solver is described. Estimates of the importance of the blade blockage effect are obtained by analyzing the propeller of the well-known KRISO container ship (KCS).

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Document Details

Document Type
Technical Report
Publication Date
Jul 04, 2015
Accession Number
AD1000888

Entities

People

  • David Hally

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accounting
  • Boundaries
  • Boundary Element Methods
  • Boundary Layer
  • Computational Fluid Dynamics
  • Containers
  • Couplings
  • Equations
  • Equations Of Motion
  • Flow
  • Fluid Flow
  • Grids
  • Iterations
  • Open Water
  • Propeller Blades
  • Propellers
  • Self Propelled

Readers

  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Marine Hydrodynamics