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Type of Document	Engineer's Thesis
Author	Satre, Robert Scott
URN	etd-01052006-153127
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-01052006-153127
Title	An experimental investigation of flame propagation downstream of a cylindrical flameholder
Degree	Engineer's Degree
Option	Aeronautics
Advisory Committee	Advisor Name Title E. E. Zukoski Committee Chair
Keywords	none
Date of Defense	1959-01-01
Availability	unrestricted
Abstract Flame propagation downstream of a 1/8 inch circular cylindric flameholder was studied experimentally. The effects on flame spreading of the fuel-air mixture velocity and such chemical parameters as fuel-air ratio, mixture temperature, and fuel composition were determined. Combustion wake widths were determined from measurement of spark Schlieren photographs. The data indicate that flow was laminar up to a critical velocity corresponding to a Reynolds number of 0.9 x 10^4, and turbulent for super critical velocities. The experiments were restricted to the turbulent flow regime. In this regime, the wake width was velocity independent and fuel-air ratio had only a slight effect. There was a small, and nearly linear, decrease in wake width as the temperature was increased. The effect substitution of hydrogen gas for hydrocarbon fuel revealed that turbulent wake spreading was independent of fuel composition. Comparison of the experimental results with theoretical treatments of flame spreading showed that none of the existing theories was satisfactory.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    Satre_rs_1959.pdf 3.50 Mb 00:16:12 00:08:19 00:07:17 00:03:38 00:00:18