抄録
In the present paper, an experimental technique of digital-laser-speckle method is described to measure the temperature distributions accurately in a diluted hydrogen flame by helium. In order to improve the measurement accuracy, the influence of species concentrations of the flame were taken into account in the temperature evaluation measured by gas-chromatography technique. It was found that the temperature corrections up to 200K were observed in the flame near the fuel nozzle, suggesting an importance of species concentrations on the temperature measurement.
