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JOURNAL: Laser-induced breakdown spectroscopy for local equivalence ratio measurement in opposed jet methane-air flames
Summary
Authors:
Yushuai Liu
Zhengjie Shi
Chaoxu Chen
Yannis Hardalupas
Alex M.K.P. Taylor
Chinese Academy of Sciences
Imperial College London
Laser-induced breakdown spectroscopy for local equivalence ratio measurement in opposed jet methane-air flames
Experimental Thermal and Fluid Science
August 2022
- Laser induced breakdown spectroscopy is applied to opposed jet flows to evaluate the measurement accuracy of equivalence ratio.
- The behavior of laser induced plasma, including its spectrum, is analyzed spatially, spectrally and temporally.
- The factors, including laser pulse energy, delay time and exposure time of the ICCDs, along with a data processing approach is investigated.
- The increased measurement uncertainty in reacting flows is counteracted by increasing laser energy and using a proposed processing method.
- The LIBS is used to measure the spatial gradient of the equivalence ratio within the reaction zone, the measurements matched the simulations
Associated Research
MIP 5.1 Ammonia and hydrogen use for industrial heat & power generation