Computational Fluid Dynamics (CFD) provides valuable insights into combustion processes in gas turbines, aiding components optimization. Current limitations include computational resource requirements for simulation. The complexity of reactive analysis implies high computational costs. The purpose of this study is to demonstrate the effectiveness and applicability of an alternative methodology, conceived to reduce the computational time of reactive simulation. In this thesis, a CFD analysis is performed on a simple model of an annular combustor using the proposed approach. Whereas the typical geometric model employed for simulation, comprises the combustion chamber, injection system, and mixing devices; herein, the geometry consists solely of the combustion chamber.