Affiliation:
1. AVIC Aerodynamics Research Institute Shenyang China
2. National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology Harbin China
3. Institute of Opto‐Electronics Harbin Institute of Technology Harbin China
Abstract
AbstractIn this work, we establish a quantitative relationship between the fluorescence signal intensity of acetone and toluene and their concentration, and acetone/toluene planar laser‐induced fluorescence (PLIF) is developed to measure the concentrations of two components simultaneously, providing an equivalent ratio distribution of the flow field. Due to a thorough consideration of the tracer effect on each other's fluorescence signals, the uncertainty in the PLIF concentration measurement is reduced to 10.4%. Experimental results of OH‐PLIF and acetone/toluene PLIF indicate that the equivalence ratio distribution obtained by acetone/toluene PLIF in cold‐state flow fields can be employed to predict and analyze the trend of equivalence ratio distribution in the combustion field.