RANS Simulation of the Transitional Flow Around Airfoils at Low Reynolds Numbers for Steady and Unsteady Onset Conditions

Abstract

RANS computations around airfoils are presented for flows where transition takes place across a laminar separation bubble. Transition locations are found employing the e(exp N)-method and a linear stability solver that uses the velocity and temperature profiles from the RANS-solution. Hereby, the known e(exp N)-method is applied for the flows with steady onset conditions, whereas a new temporal scheme for the e(exp N)-method is used for the flow around a plunging airfoil. Obtained numerical results are compared to hotwire-, pressure- and PIV- measurements of laminar separation bubbles.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2004
Accession Number
ADA442472

Entities

People

  • Bernhard Eisfeld
  • Jan Windte
  • Rolf Radespiel
  • Ulrich Scholz

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Hydrodynamics
  • Mechanics
  • Micro Air Vehicles
  • Pressure Distribution
  • Reynolds Number
  • Steady Flow
  • Steady State
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

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