(NAG3-2103)
Project Funded By:
(NAG3-2103)
A key component of many combustors is the recirculation of hot combustion products with incoming fuel and air. Our experimental and computational research focuses on flame configurations that decouple recirculation chemistry from the complexity of recirculation fluid mechanics. The burner consists of a fuel jet at the center of a premixed flame stabilized on a perforated disk (schematic). As the images below show, the fuel jet is autoigniting in the premixed flame combustion products.
Our research is part of a larger collaboration with research groups in Germany, Japan, and nearby Sandia National Laboratories. The jet flame experiment will be transported to the nearby Sandia Labs where the flame will be investigated with advanced laser diagnostics.
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Gaseous Jet |
Liquid Spray |
Experimental Data Archives:
(Added August 20, 2002)Research Efforts
Gaseous Jet in Vitiated Coflow
Downloads
Design Pack. Instructions for VCB duplication.
Ensemble Diffraction Measurements of Spray Combustion in a Novel Vitiated Coflow Turbulent Jet Flame Burner. WSS/CI 00S-47 Preliminary Spray Research Results as well as VCB introduction (March 14, 2000).
Addendum to WSS/CI 00S-47 (March 20, 2000).
Update
In August 2000, we plan to study the burner at the Combustion Research Facility's Turbulent Diffusion Flame Laboratory at Sandia National Laboratories in Livermore, California. The test flames are yet to be determined. One possibility is a lean methane-air jet flame in the hydrogen-air coflow, where we have a steady lift-off and some luminosity in the inner jet cone (below the flame).
Design Pack developed to guide in the duplication of the vitiated coflow combustor.
Preliminary results from a study of a methanol spray with a reacting hydrogen-air coflow were presented at the Western States Section of the Combustion Institute's spring meeting at the Colorado School of Mines, Golden, CO, on March 17, 2000.
Current design, built and ready for preliminary global emissions measurements.
A history of design modifications is presented in the combustor design evolution.
The group presented the gaseous jet research at the 4th International Workshop on Measurement and Computation of Turbulent Nonpremixed Flames in Darmstadt, Germany in June 1999. (poster)
