Ansys Fluent uses iterative methods to solve sets of nonlinear governing equations and generate the solution data for any CFD problem. The focus of this lesson is on under-relaxation factors that are required to ensure a stable and robust calculation process. These under-relaxation factors are grouped into the Controls section of the Solution tab of Ansys Fluent. In this lesson, we will learn about how to implement implicit and explicit under-relaxations with the help of an example and see how to use the Equation option in viewing and/or unselecting from the list of equations that are solved by Ansys Fluent.

**Simulation Files**

Download the files __ here__ to follow the video step-by-step. Ansys Student can be downloaded for free