Comparison of CMC and SLF Model Predictions with Experimental Data for Turbulent Hydrogen Jet Flames

Abstract

Jet diffusion flames have long been the basic model problem for developing and verifying models for turbulent nonpremixed combustion. In this report, a comprehensive jet flame study of two well known models is made as a foundation step for the incorporation of these models into DSTO's ongoing effort to develop a fundamentally-based generic gas turbine combustor predictive capability. Conditional Moment Closure (CMC) and Steady Laminar Flamelet (SLF) model predictions are compared with data measured from the two turbulent hydrogen jet flames studied experimentally by Kent and Bilger, and Barlow and Carter. The comparison highlights the advantages and disadvantages of each model in the context of predicting turbulent nonpremixed flame dynamics in general. The future application of these two models to the turbulent nonpremixed systems associated with gas turbine engine combustors is discussed in the light of the findings presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 06, 1998
Accession Number
ADA348850

Entities

People

  • Nigel S. Smith

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Chemical Equilibrium
  • Chemical Reactions
  • Chemistry
  • Combustion
  • Computational Fluid Dynamics
  • Diffusivity
  • Energy
  • Experimental Data
  • Flow Fields
  • Heat Loss
  • Mass Transfer
  • Measurement
  • Research Facilities
  • Reynolds Number
  • Turbines
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.