The Backward Facing Step (BFS) is one of the most important benchmark problems in Computational Fluid Dynamics (CFD), widely used to study flow separation, recirculation, reattachment, and turbulence behavior. Despite its simple geometry, the BFS case contains complex flow physics that make it an essential learning and validation case for CFD engineers, researchers, and students.

In this hands-on course, you will learn how to set up, run, and analyze the Backward Facing Step simulation using OpenFOAM. The course covers the complete CFD workflow including geometry creation, structured mesh generation using blockMesh, boundary condition setup, turbulence model selection, solver execution, convergence monitoring, and post-processing in ParaView. You will also explore commonly used turbulence models such as k–ε, k–ω, and Spalart–Allmaras while understanding their practical applications in separated turbulent flows.

By the end of this course, you will have the confidence to simulate turbulent benchmark flows in OpenFOAM, visualize separation and reattachment behavior, perform parametric studies, and apply the same CFD workflow to more advanced real-world engineering problems.