Numerical Simulation of Tip Vortices of a Ducted Rotor

Abstract

A ducted rotor was tested in the 36-inch water tunnel at David Taylor Model Basin, Naval Surface Warfare Center/Carderock Division. At the blade tip, both leakage and trailing edge vortices were observed through cavitation inception. Detailed flow patterns in the vortices have been mapped with LDV technique. Numerical calculations, based on a Reynolds-averaged Navier-Stokes formulation, were performed to simulate the observed vortices. To reduce the numerical diffusion, a fifth-order-accurate upwind differencing scheme was implemented to evaluate the flux difference across the cell surface. The results were compared with the experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2004
Accession Number
ADA426510

Entities

People

  • Cheng-i. Yang
  • Christopher J. Chesnakas
  • Minyee Jiang
  • Stuart D. Jessup

Organizations

  • Naval Sea Systems Command

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Cavitation
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Diffusion
  • Equations
  • Flow Fields
  • Fluid Dynamics
  • Measurement
  • Navier Stokes Equations
  • Pressure Distribution
  • Reynolds Number
  • Simulations
  • Static Pressure
  • Trailing Edges
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)
  • Naval Architecture and Marine Engineering.