Reynolds-Averaged Navier-Stokes Codes and Marine Propulsor Analysis

Abstract

This report describes the application of Reynolds-Averaged Navier- Stokes (RANS) codes to viscous-flow problems associated with marine propulsors. The theory behind RANS codes is described, and the numerical solution methods typically applied to solve the RANS equations are discussed. A description of the strengths and limitations of applying RANS codes to predict real fluid effects is given. Careful scrutiny and engineering judgment must be exercised in the interpretation of predictions based on the turbulence models typically embodied in RANS codes. Two benchmark computations using DTNS3D, a typical RANS code, are presented to illustrate interpretation concerns. The examples include flow over a pipe expansion and flow over the leading edge of a blunt rectangular plate.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1993
Accession Number
ADA272187

Entities

People

  • Daniel T. Valentine

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Engineering
  • Engineers
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Geometry
  • Hydrodynamics
  • Mechanical Properties
  • Unmanned Ground Systems
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.