CFD Validation for Propulsion System Components (la Validation CFD des organes des propulseurs)

Abstract

Computer codes which solve the Reynolds averaged Navier Stokes equations are now used by manufacturers to design turbomachines, but there is no consensus about which grids and which turbulence models are good enough to provide a reliable basis for design decisions. The AGARD Propulsion and Energetics Panel set up Working Group 26 to help to clarify these issues, by analysing predictions (using as wide a range of codes as possible) of two representative but difficult single blade row test cases: NASA Rotor 37 and an annular turbine cascade tested by DLR. This report presents the Group's results and conclusions. Recommendations are made about the type and density of grid, which depend on many factors. Mixing length turbulence models are unsuitable for turbomachines with their complex endwall flows; some kind of turbulent transport model is essential. No turbulence model was found which always gave good loss predictions.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1998
Accession Number
ADA349027

Entities

People

  • J. Dunham

Organizations

  • AGARD

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Euler Equations
  • Fluid Dynamics
  • Fluid Flow
  • Hydrodynamics
  • Mathematical Models
  • Mechanical Engineering
  • Numerical Analysis
  • Numerical Methods And Procedures
  • Pressure Distribution
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.
  • Small Business Innovation Research Program (SBIR) EDI Research and Innovation.