In this subsection, the performance of GOTM in some idealised turbulent flows is discussed. In these flows there are regions, where certain analytical solutions, like the law of the wall or the Rouse profile, apply. These solutions can be used to test the correctness of the implementation and the accuracy of the numerical schemes. The theoretical background is discussed in section 4 and in the review article of Umlauf and Burchard (2005).
The first few of these idealised flows serve also as a short tutorial for new GOTM users. We supplied several input files for these scenarios to illustrate the performance of different turbulence models for the same flow. It is recommended to start with the Couette-flow described next.