rs, including the geometry configurations of the inlet and outlet cone sections, the substrate, and the composition of exhaust gases. Consequently, designing an efficient catalytic converter is of paramount importance. In this project (based on ansys CFX tutorial of catalytic converter), we will gain insights into the Computational Fluid Dynamics (CFD) modeling approach for visualizing the flow inside a catalytic converter. Inlet velocity of 25 m/s is used in this simulation. Catalyst coated honey-comb structure is modeled using porous domain with directional source of quadratic resistance. More details later. Stay tuned! This work can be reused under the CC by License.