2D in-situ high spatiotemporal resolution
A diagnostic system based on nonlinear two-line atomic fluorescence that enables simultaneous high-precision measurement of flame temperature and species concentration for burner design.
Zhu, Runfan · Liu, Siyu · Wenyu, Wang · He, Yong · Wubin, Weng · Wang, Zhihua
International Journal of Hydrogen Energy 2026
The system obtains two-dimensional cross-sectional temperature and species information with high spatiotemporal resolution, revealing combustion zone structure more intuitively than point measurements.
By varying hydrogen blending ratio and adiabatic flame temperature, the study quantifies their significant elevation of peak temperature and NOx emissions in the reaction zone.
Reducing spacing from 2.5D to 2D increases NOx by 10.98 ppm, and decreasing diameter from 8 mm to 5 mm leads to even greater growth, providing direct guidance for nozzle design.