Dataset of Paper "Optimization and parallelization of the Discrete Ordinate Method for radiation transport simulation in OpenFOAM: Hierarchical combination of shared and distributed memory approaches": Time profiling of the DOM model stages. Speed-up and parallel fraction of the “global results generation” stage in the DOM model. Comparison of computational time between original and modified DOM model stages. Scalability of the peer-to-peer communication (OpenFOAM) and master-slave communication (ANSYS Fluent) architectures. Results of the benchmarking of the model with ANSYS Fluent in three reactors. Mesh of the jerrycan. Mesh of the anular reactor Mesh of the tubular reactor couple to a compound parabolic collector.