Data supporting the publication: Physics-based Analytical Correlation for NOx formation in Partially Premixed Swirl-Stabilized Lean H2 Combustors

This repository contains the data and model used to compute the Emission Index of Nitrogen Oxides (EINOx) in partially-premixed hydrogen-swirl combustors, as described in Garcidueñas-Correa et al. (2026). The model uses EINOx experimental data on hydrogen combustion retrieved from the literature and compiled into a single database. This experimental database is divided into training and validation subsets using k-means clustering. The adiabatic flame temperature grid interpolator is used to avoid lengthy computations. This interpolator is generated as a function of equivalence ratios, mixture temperatures and pressures using the validated chemical-kinetic model developed at the University of California San Diego (USCD). The final EINOx model is calculated using a differential evolution algorithm with dithering for optimization.The dataset includes the experimental database and code scripts required to perform the optimization and obtain the model parameters from the provided database; generate new datasets in case the database is expanded; and generate the interpolator file. All scripts are provided as Jupyter notebooks to facilitate usability and reproducibility of the results presented in Garcidueñas-Correa et al. (2026).