Calculation of the Three Dimensional Particle Trajectories in a Turbine Stage

Abstract

The equations of motion, in three dimensions, of solid particles entrained by a gas flow through the stationary and rotating cascades of a turbine are derived. The gas velocity components and density at all the mesh points of a square grid constructed in the flow channels are computed assuming a compressible flow. Formulas to determine the proper drag on the particles for a wide range of Reynolds numbers are given. A gas particle flow tunnel is used to investigate experimentally the phenomenon of particle impact with the turbine blades or casing and their rebound from these walls. Formulas for the restitution ratio due to collision and the rebound to incidence angle ratio are derived. This information is used in the equations of motion of the solid particles.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0753364

Entities

People

  • M. F. Hussein
  • Widen Tabakoff

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Compressible Flow
  • Computer Programming
  • Computer Programs
  • Computers
  • Differential Equations
  • Equations
  • Equations Of Motion
  • Fluid Dynamics
  • Gas Flow
  • Gas Turbines
  • Molecular Dynamics
  • Navier Stokes Equations
  • Pressure Gradients
  • Three Dimensional
  • Turbine Blades
  • Turbomachinery

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerosol Science/Aerosol Physics
  • Calculus or Mathematical Analysis