研究目的
Investigating the potential of a forward method for the validation of the numerically modeled primary particle size distribution (PPSD), by comparing numerically synthesized signals to TiRe-LII experimental data.
研究成果
The novel forward approach can be considered as a consistent validation strategy complementary to the inverse method. It allows to reduce the uncertainties and can be used to detect incorrect PPSDs, providing further indications for the modeling development.
研究不足
The forward approach cannot definitely confirm the validity of the PPSD but can be used to detect incorrect PPSDs and avoid the exclusion of a correct PPSD. The accuracy of the numerically synthesized signal depends on the quality of the numerical prediction for both the gaseous and the solid phases.
1：Experimental Design and Method Selection:
The study is based on the numerical reconstruction of the temporal evolution of the incandescence signal from numerical results and its comparison with the measured signal. Two indexes are proposed to quantify the agreement between the numerically synthesized and the measured signals.
2：Sample Selection and Data Sources:
The study uses experimental LII signals extracted from literature for a laminar premixed flame.
3：List of Experimental Equipment and Materials:
The LII measurements were performed with a 1064-nm beam produced by a Q-switched Nd:YAG laser. The detection system was equipped with a bandpass filter at 575 nm with a 32-nm full width at half maximum (FWHM).
4：Experimental Procedures and Operational Workflow:
The LII signal was reconstructed by an in-house code utilizing the signal modeling description provided by Hofmann et al. and the conduction model developed by Liu et al.
5：Data Analysis Methods:
The study uses two characteristic indexes, the expected value E and the non-dimensional standard deviation σ*, to compare the experimental and numerical synthesized signals.
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