Theoretical Study of the Flow in a Rotating Duct Experimental Study Through Flow Visualization in a Curved Duct (Etude Theorique de l'Ecoulement Dans un Canal en Rotation. Approche Experimentale par la Visualisation de L'Ecoulement Dans un Canal Courbe),

Abstract

An experimental and theoretical study of heat transfer and flow in a rotating duct is under development at ONERA. The duct simulates in a simplified manner an internal cooling passage of the blade of a turbine rotor. It has been experimentally demonstrated that the rotational velocity causes an increase in thermal exchange by convection in the duct. This phenomenon is explained by secondary flows due to Coriolis force. The theoretical aspect of the work involves the solution of the Navier-Stokes equations in three dimensions (time marching, ADI method). For both laminar and turbulent flows, the results obtained demonstrate the significance of secondary structures (having both two and four vortices). Also, by using a rotation-curvature analogy, visualisation of the flow with air or hydrogen bubbles in a water duct gives rise to the same flow structures.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1991
Accession Number
ADA239057

Entities

People

  • Denis Dutoya
  • Jean Perucchini
  • Joel Guidez
  • Pierre-jaques Michard

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Buoyancy
  • Computational Fluid Dynamics
  • Computer Programs
  • Equations
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Incompressible Flow
  • Measurement
  • Mechanics
  • Navier Stokes Equations
  • Secondary Flow
  • Three Dimensional
  • Turbulent Flow
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Small Business Innovation Research Program (SBIR) EDI Research and Innovation.