Abstract
Noninvasive technology for measuring instantaneously two-dimensional (2D) temperature
distributions of flame using two-color planar laser induced fluorescence (PLIF) of OH is
investigated. A calibration method is researched and developed. This method is based on the
calibration experiments with a laminar premixed flame and thermocouple, and avoids complex
calculation and uncertainty of the spectrum parameters. Measurements for a flat burner at ambient
temperature under atmospheric pressure are also presented; calibration results are used to diagnose
a supersonic combustion in scramjet combustor. The conclusion indicates that this method is useful,
and a better precision of calibration can be acquired by correcting the line shapes of the spectral
lines and lasers.
© 2013 Chinese Optics Letters
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