Turbulent-flow characterization and radiation from gaseous fuel jets. Annual report, April 1985-April 1986
This work addresses methods for increasing the radiant output from gaseous-jet diffusion flames by varying key parameters of the combustion process such as ambient oxygen concentrations, fuel additives, and air or fuel preheating, together with an investigation of the effects of turbulent jet flow on the levels of radiant output. A series of radiant output measurements in turbulent jet flames were obtained using a 1-mm-diameter nozzle burning propane and stabilized by oxygen. The latter flames have an initial laminar flame region followed by transition and a fully developed turbulent flame brush. Two separate distinct luminous zones are observed for the laminar and turbulent zones. Apparently, soot formed in the laminar zone is fully oxidized by the high straining rates associated with transition. The subsequent turbulent burning has low enough straining rates to permit renewed soot formation.
- Research Organization:
- Factory Mutual Research Corp., Norwood, MA (USA)
- OSTI ID:
- 5880292
- Report Number(s):
- PB-88-107990/XAB
- Country of Publication:
- United States
- Language:
- English
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