This 2-day training in OpenFOAM is designed to enable CFD users to start using OpenFOAM for practical computations. The course consists of a series of lectures that provide a general understanding of OpenFOAM topics followed by hands-on work. Along with the hands-on examples that show the “how”, the lectures include discussion of the “why” to enable participants to independently use OpenFOAM in their daily work. No knowledge of the OpenFOAM library is assumed. Basic Linux commands and their relationship to hands-on examples are covered.