U ovom radu obrađena je tematika primjene i svrhe Računalne dinamike fluida (RDF) u svakodnevnoj praksi te metode vizualizacije strujanja fluida. Radi lakšeg shvaćanja pojma modela turbulencije u radu su navedene osnovne karakteristike fluida od kojih je fokus dan na viskoznosti i kompresibilnosti. U svrhu opisa dinamike gibanja fluida definirane su osnovne vladajuće jednadžbe strujanja fluida, koje uključuju laminarani i turbulentni režim toka. Značajan fokus ovog rada posvećen je kreiranju numeričkih modela primjenom Računalne dinamike fluida, od samog predprocesiranja, definiranja domene problema, izrade numeričke mreže, sve do parametara potrebnih za definiranje pojedinih turbulentnih modela te načina vizualizacije rješenja promatranog problema kroz postprocesiranje. Drugi dio rada razmatra eksperimentalne i računalne metode vizualizacije strujanja fluida unutar kojih su dani pojedini primjeri za svaku od metoda vizualizacije. This paper deals with application and purpose of Computational Fluid Dynamics (CFD) in everyday practice and methods of fluid flow visualization. In order to facilitate the understanding of the concept of turbulence model the paper presents the basic characteristics of the fluid, of which the focus is on viscosity and compressibility. For the purpose of describing the dynamics of fluid motion, the basic governing equations of fluid flow are defined, which include laminar and turbulent flow regimes. A significant focus of this paper is given to the creation of numerical models using CFD, from preprocessing, defining the problem domain, creating a numerical network, to necessary parameters for defining individual turbulent models and methods of visualizing the solution of the observed problem through postprocessing. The second part of the paper discusses experimental and computational methods of fluid flow visualization, within which individual examples for each of the visualization methods are given.