Analysis of flow through a water turbine diffuser

Ovim radom prikazana je izrada simulacije strujanja fluida prema zadanoj geometriji difuzora. Korak po korak su objašnjeni postupci od učitavanja geometrije, kreiranja numeričke mreže, unos parametara i uvjeta te sama simulacija tlakove i brzina fluida kroz difuzor. Za izradu simulacije korišten je program ANSYS pomoću kojeg je izrađena stacionarna simulacija turbulentnog strujanja. Vizualizacijom tlakova i brzina kroz difuzor dobiven je detaljniji uvid u način rada predložene geometrije difuzora. Na temelju dobivenih rezultata moguće je ciljano provesti daljnja poboljšanja geometrije.This paper presents the development of a fluid flow simulation according to the given diffuser geometry. The procedures from loading geometry, creating a numerical network, entering parameters and conditions, and the simulation of pressures and fluid velocities through the diffuser are explained step by step. The ANSYS software was used to create a stationary simulation of turbulent flow. By visualizing the pressures and velocities through the diffuser, a more detailed insight into the mode of operation of the proposed diffuser geometry was obtained. Based on the obtained results, it is possible to make further improvements to the geometry