A New Method for Calculating the Flow Field in a Dump Combustor.

Abstract

A combined elliptic/parabolic scheme was developed in which the elliptic code, STARPIC, was only used for the recirculation region of a dump combustor. Downstream of the recirculation region the parabolized form of the Navier-Stokes equation was used. The code written for this region used an architecture similar to that found in STARPIC. These programs were then combined producing what we call a hybrid code. Calculations were run in a dump combustor having an area ratio of approximately four. Comparisons were made of the radial profiles of velocity and turbulence kinetic energy with both the totally elliptic calculations and with experiment. In all cases the hybrid method agreed with the experiments at least as well as the elliptic calculations, and in most cases showed even better agreement. Results indicate that an order of magnitude savings in both computational time and machine storage can be achieved if the hybrid method is used. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1984
Accession Number
ADA149305

Entities

People

  • A. A. Hale
  • E. F. Brown

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Combustion
  • Combustors
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Engineering
  • Engineers
  • Equations
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Kinetic Energy
  • Mechanical Engineering
  • Navier Stokes Equations
  • Pipe Flow

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Computer Programming and Software Development.
  • Fluid Mechanics and Fluid Dynamics.