20.500.12556/DKUM-94666 Simulacija tokovnih in toplotnih razmer v modelu prekata za gorivni element v bazenu za izrabljeno jedrsko gorivo diplomsko delo Simulation of flow and thermal conditions in the model of a fuel element rack in a spent nuclear fuel pool V diplomski nalogi je bila izvedena numerična analiza tokovnih in temperaturnih razmer v gorivnem elementu, nameščenem v bazenu za izrabljeno jedrsko gorivo. Simulacije so bile izvedene v programu za računsko dinamiko tekočin ANSYS Fluent, kjer so bile gorivne palice modelirane kot porozni medij z vgrajenim virom toplote. Analiza je obsegala tri sklope: primerjavo različnih hladilnih pristopov (prisilna, naravna in kombinirana konvekcija), preučitev vpliva poroznosti ter preučitev vpliva postopnega zmanjšanja pretoka hladilna vode na temperaturne razmere v modelu. Rezultati prikazujejo spremembo hitrosti pretoka in temperature s spreminjanjem hladilnih pristopov, poroznosti ali masnega toka. In this thesis, a numerical analysis of flow and temperature conditions in a fuel assembly located in a spent nuclear fuel pool was carried out. The simulations were performed using the computational fluid dynamics software ANSYS Fluent, where the fuel rods were modeled as a pourous medium with an embedded heat source. The anlysis consisted of three parts: a comparison of different cooling approaches (forced, natural and combined convection), an investigation on the influence of porosity and an examination of the impact of a gradual reduction in coolant flow on the temparature conditions in the model. The results show changes in flow velocity and temperature with variations in cooling approaches, porosity or mass flow rate. simulacija tokovnih razmer ANSYS Fluent gorivni element porozna snov bazen za izrabljeno jedrsko gorivo flow simulation ANSYS Fluent fuel assembly porous medium spent nuclear fuel pool true true false [T. T. Pešak] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-08-25 10:25:23 2026-01-09 08:38:32 2026-01-15 03:10:01 0000-00-00 00:00:00 2025 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (X, 53 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.039.54(043.2) 264628227 UN_Pesak_Tilen_Timotej_2025.pdf UN_Pesak_Tilen_Timotej_2025.pdf 1 2E4F5B891B1475479BE3152142693373 542831d78c6418f77cb9fd2d0553b413fe1e4788f965c5efe062a68c0bf7f173 d2d75f4b-92fe-11f0-8742-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=198597 Fakulteta za strojništvo 0 0 0