2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34354The article presents some aspects concerning the construction of a new thorn for the Cactus code, a complete 3-dimensional machinery for numerical relativity. This thorn is completely dedicated to numerical simulations in cosmology, that means it can provide evolutions of different cosmological models, mainly based on Friedman-Robertson-Walker metric. Some numerical results are presented, testing the convergence, stability and the applicability of the code.18 pages, 8 figures, LatexGeneral Relativity and Quantum CosmologyAstrophysicsComputational Physicstext