This book is focused on combining the concepts of computational fluid dynamics (CFD) and renewable energy technologies. Besides introducing the fundamentals, the core of this book contains a series of practical examples providing useful information about the methods and smart solutions for CFD modeling of selected Renewable Energy Sources (RES) - based technologies. Each chapter includes a theoretical introduction to the discussed topic, descriptions of factors determining efficiency and other important parameters, followed by practical information concerning the CFD modeling methodology. A summary of the relevant recommendations and exemplary results with comments is also included. Features: provides practical examples on the application of numerical methods in the analysis of renewable energy processes includes an introduction to CFD for practitioners explores selected aspects of the methodology used in CFD simulations of renewable energy technologies discusses tips and hints for efficient use of CFD codes functionalities contains additional exercise devoted to the geothermal systems This book is aimed at professionals and graduate students in energy engineering, renewable energy, CFD, energy systems, fluid mechanics and applied mathematics.