Featuring automatic mesh generation, CONVERGE automotive CFD software from Convergent Science simulates the fluid flow, spray, and combustion found within an internal-combustion engine. By automatically generating a mesh at runtime, the software removes all user meshing time, eliminating arguably the largest bottleneck that limits productivity related to engine CFD analysis. Moreover, the mesh generated by CONVERGE is stationary and orthogonal, thus minimizing meshing-related errors. The user has extensive control over the mesh size via simulation inputs. In addition, CONVERGE automatically adds mesh elements when and where they are needed based on solution gradients. This approach is called adaptive mesh refinement and promotes grid-independent solutions. Finally, the meshing approach of CONVERGE allows for advanced physics, including engine knock, to be studied in detail as gradients in variables such as temperature are resolved automatically.