Abstract
A single-compression, “tailored” interface shock tube was used to measure the thermal energy radiated from spray combustion. Precompressed methanol was injected through a throttle nozzle into air in the reflected shock wave. Monochromatic emission and emissive powers were followed with infrared detectors at different distances from the injection nozzle. Flame radii were also determined. Results showed: (1) The thermal radiation energy increased with increasing temperature from 1000 K to 2000 K and with increasing pressure from 0.5 MPa to 2 MPa. The thermal radiation energy from soot was 1/100 lower than that of light oil. (2) The maximum soot concentration was 5 x 10-7 cm3 soot/cm3 soot + gas, which corresponded to 1/200 of that of light oil.
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