Page - 1450 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 1 Virtual model Fig. 2 Real state (year 2017) 4. OPENFOAM 4.1. INTRODUCTION OpenFOAM (hereafter referred to as OF) is currently the most widely used CFD (computational fluid dynamics) tool, that is available for download. It is distributed under the GPL (General Public License), which means it can be used free of charge and its source code is freely accessible. GPL licenses give users the freedom to modify and redistribute modified code. Figures and codes are created with using object-oriented programming and operators. It allows user to create their own solvers relatively easy. Users can create their own objects, boundary conditions or turbulence models that will work with existing solvers without redrawing existing source code. The OF consists of a large basic library, which contains a number of different types of solvers, tools for creating and manipulating the computing network (mesh networking), monitoring the quality of the computing network, counting variables, parallel calculations on multiple computers and others. 4.2. PROCEDURE Due to the fact that OF as such is a set of tools for CFD simulation solutions, it does not basically include utility programs for processing object geometry, preparing simulation, selecting boundary conditions, creating a computing network, 1450