20.500.12556/DKUM-68256 Numerična simulacija toka goriva v vbrizgalni šobi Numerical simulation of fluid flow in the injection nozzle Namen diplomske naloge je bil raziskati tokovne razmere znotraj izvrtine za vbrizg goriva oziroma v vbrizgalni šobi pri uporabi računskih mrež različnih gostot. Izbrati smo morali pravo mrežo, zato smo preračune naredili na redki, srednji in gosti mreži. Diskretizacijo smo naredili z Richardsonovo ekstrapolacijo. Za nadaljnjo analizo smo izbrali srednjo mrežo, ki je podala kompromis med časom izračuna ter kvaliteto izračuna. To mrežo smo nato uporabili za simulacijo pri dveh različnih tlakih. Rezultate obeh tlakov smo primerjali na dveh robnih pogojih, simetriji in izstopu ter prikazali pri štirih različnih časih, kateri so najlepše prikazali spremembo vpadne faze. The purpose of the thesis was to investigate the current conditions inside the fuel injector nozzle when using computational networks of different densities. We had to choose the right network, so we made calculations on the rare, medium and hosted network. Discretization was done with Richardson's extrapolation. For further analysis, we selected a medium network that compromised during the calculation time and the quality of the calculation. This network was then used for simulation at two different pressures. The results of the two pressures were compared on two boundary conditions, symmetry and outlet, and were shown at four different times, which best illustrated the change of the incident phase. dizel kavitacija programski paket FIRE Richardsonova ekstrapolacija vbrizgalne šobe cavitation diesel software package FIRE Richardon's extrapolation injection nozzles true true false [B. Šaše] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-09-14 00:50:23 2017-09-29 09:15:29 2022-08-01 15:04:02 2019-07-11 16:47:02 2017 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.436.038(043.2) 21041686 URN:SI:UM:DK:LK8ULDYZ UN_Sase_Blaz_2017.pdf UN_Sase_Blaz_2017.pdf 1 34979872F6177C70D4DAD2AE90A581C1 37423c8176af1ad8c8ee513994a1306f147d12e9a80e0bc9e9cc62de8e7cb8bd 619177da-7c0f-11eb-bb7a-00155d0001ca 20.500.12556/dkum/76d6fc47-1ab2-402d-93a5-ab3a6bd00128 https://dk.um.si/Dokument.php?lang=slv&id=119108 Fakulteta za strojništvo 0 0 0