Analysis and Design Tools for Combustion Instabilities

Abstract

Computational analysis of flow through a model combustor is completed using several commercial CFD packages. Both global and reduce-order models prove ineffective for this gas-turbine applicaion. These models exhibit signifloant stiffness or require numerical damping of product concentrations. The existenoe of a CH4+M reaction is critical to the performanoe of any methane/air chemistry model. A 12-specie model based on a set of elementary reactions is found to perform well. The flow is made unsteady by imposing a sinusoidally varying inflow profile.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2001
Accession Number
ADA396433

Entities

People

  • Andrew G. Godfrey
  • Jeff Borggaard
  • Uri Vandsburger

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Cauchy Problem
  • Combustion
  • Combustors
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Equations
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fuel Nozzles
  • Gas Turbines
  • Mass Flow
  • Mechanical Engineering
  • Payload
  • Simulations
  • Three Dimensional

Fields of Study

  • Engineering

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation