Geometry creation of water turbine draft tube

Tema ovog završnog rada je izrada geometrije difuzora vodne turbine. U radu se navode osnovne funkcije difuzora, zadaće, te gubici koji nastaju u radu. Treće poglavlje posvećeno je vrstama difuzora koji se susreću u praksi, te su za iste navedene osnovne karakteristike, kao i prednosti upotrebe. Posebno poglavlje posvećeno je koljenastom difuzoru koji je predmet izrade 3D modela i simulacije. U radu je prikazana 2D dokumentacija na temelju koje je izrađen 3D model koljenastog difuzora u programskom alatu Catia, te rješenja numeričke simulacije u programskom alatu Ansys.The topic of this final paper is geometry creation of water turbine draft tube. The paper presents functions of the draft tube, tasks and operating losses of the draft tube. Third chapter is devoted to types of draft tubes that exist in practise, for which are stated all main characteristcs, as well as advantages of use. A special chapter is devoted to elbow draft tube which is the topic of geometry creation and simulation. In this paper is shown 2D documentation which is the basis of of the 3D model creation of the elbow draft tube in CAD software Catia, as well as numerical simulation solution in software Ansys