Data for: Multiple-scattering microfacet ray tracing of pre-melt laser absorption in 316L powder beds: particle roughness, packing and beam profile

Simulation data for the article "Multiple-scattering microfacet ray tracing of pre-melt laser absorption in 316L powder beds: particle roughness, packing and beam profile" (reference to be added on publication). Monte Carlo ray-tracing results for laser absorption in stochastically packed 316L powder beds before melting. The same beds were simulated with four surface transport models: ideal diffuse reflection (LAMBERT), a single-scattering GGX microfacet model (GGX_SINGLE), the multiple-scattering microfacet random walk of Heitz et al. (2016) (HEITZ_EXACT) and its tabulated approximation (HEITZ_LUT). LBHM_316L_absorption_data.zip contains the batch results (one CSV row per simulation run) of the verification tests, a roughness sweep on a representative bed and 100-bed ensembles with Gaussian and top-hat beams, together with absorption-depth and bounce statistics, the HEITZ_LUT look-up table, a data dictionary and a README that maps each file to the sections, tables and figures of the article. LBHM_316L_photon_maps_seed9.zip contains the full per-photon maps of four runs on the representative bed.