CONVERGE contains several options for three-dimensional combustion modeling in combustion devices such as internal combustion engines, gas turbine combustors, and industrial burners. In this workshop, we will discuss several combustion models that can be used to simulate diffusion-controlled, non-premixed combustion: direct chemistry approach (SAGE), 3-Zone Extended Coherent Flame Model (ECFM3Z), and Representative Interactive Flamelet (RIF). This workshop will focus on the underlying theory and the advantages and disadvantages of each combustion model, as well as how these models are coupled with the CFD solver in CONVERGE. We will give recommendations and best practices, and we will show published CONVERGE results for non-premixed combustion modeling in several types of engines. *This session does not include hands-on CONVERGE Studio practice. PREREQUISITES Introduction to CONVERGE (or equivalent introductory CONVERGE training course)