NASA SBIR SUCCESS STORY Glenn Research Center 
1990 Phase II

A Probability Density Function (PDF) Method for Turbulent Reacting Flow

CFD Research Corporation

Huntsville, AL
 

INNOVATION
A Monte Carlo simulation technique for turbulent combustion and its viability for practical applications
Monte Carlo PDF solution agrees with experimental data (Piloted JetDiffusion Flame) much better than solutions using simpler models
Monte Carlo PDF solution agrees with
experimental data (Piloted Jet Diffusion
Flame) much better than solutions using
simpler models
Optional Powerpoint file
ACCOMPLISHMENTS
    • A Monte Carlo solution module for the composition PDF was developed to solve finite-rate chemical kinetics in  turbulent flows
    • The PDF module was coupled with a general purpose CFD code, CFD-ACE
    • The PDF module was validated against experimental data for hydrogen and hydrocarbon combustion
COMMERCIALIZATION
    • The PDF solution module has been incorporated into CFD-ACE and is being used by BMW and other selected clients on a trial basis
    • The PDF solution module is also usable as an enhancement for other finite-volume CFD codes, such as  CFD-FASTRAN
    • The PDF solution technique is being improved and extended with additional NASA and CFDRC funding 
 GOVERNMENT/SCIENCE APPLICATIONS
    • Prediction of emissions in turbulent combustion, especially automotive and aircraft engines and stationary power sources

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Curator: SBIR Support