This lesson covers the process of verifying and improving simulation results in Ansys Fluent® fluid simulation software. It explains how to check if the boundary conditions were applied correctly, how to compare the results to hand calculations, and how to reduce numerical errors in the solution process. For instance, the lesson discusses how to ensure that the values at the inlet match what is specified in pre-analysis and how the static pressure at the outlet matches the boundary conditions. It also highlights the importance of reducing the convergence criteria and refining the mesh to reduce errors and improve the solution results.