Numerična simulacija toka goriva v vbrizgalni šobi

diplomsko delo

Blaž Šaše (Author), Breda Kegl (Mentor), Luka Lešnik (Co-mentor)

Abstract

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.

Keywords

dizel;kavitacija;programski paket FIRE;Richardsonova ekstrapolacija;vbrizgalne šobe;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2017
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	[B. Šaše]
UDC:	621.436.038(043.2)
COBISS:	21041686
Views:	1125
Downloads:	103
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Numerical simulation of fluid flow in the injection nozzle
Secondary abstract:	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.
Secondary keywords:	diesel;cavitation;software package FIRE;Richardson's extrapolation;injection nozzles;
URN:	URN:SI:UM:
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za strojništvo, Energetsko, procesno in okoljsko strojništvo
Pages:	VII, 25 f.
ID:	10864148