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Title:Računalniško modeliranje gibanja goriva in njegov vpliv na konstrukcijo rezervoarja
Authors:ID Vesenjak, Matej (Author)
ID Ren, Zoran (Author)
ID Müllerschön, Heiner (Author)
ID Matthaei, Stephan (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-RGUJBPB8
 
Language:Slovenian
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Računalniški modeli vozil za simuliranje trkov vedno natančneje opisujejo obnašanje resničnih vozil. Rezervoar za gorivo je eden izmed elementov vozil, katerega računalniški modeli so bili do sedaj zelo poenostavljeni. Takšni modeli upostevajo le vztrajnost mase goriva, ki je z masnimi točkami pritrjenana steno rezervoarja, vendar pa je vpliv gibanja goriva v rezervoarju popolnoma zanemarjen. Prispevek opisuje nove računalniske modele, s katerimi je mogoče simulirati deformacijo rezervoarja za gorivo ob upoštevanju gibanja goriva pri trku vozila. V ta namen so bile vrednotene štiri metode simuliranje gibanja tekočine (Lagrange, Euler, poljubnostna Lagrange-Eulerjeva metoda - PLE in hidrodinamika zglajenih delcev - HZD) v rezervoarju preproste oblike, analizirane z eksplicitnim programom LS-DYNA. Računalniski rezultati so bili primerjani s poprej objavljenimi preizkusnimi opazovanji, pri čemer je bila ugotovljena zelo dobra primerljivost med rezultati. Najprimernejsi metodi (HZD in PLE) sta bili kasneje uporabljeni v dinamičnih simulacijah dejanskega rezervoarja za gorivo. Simulacije so pokazale, da predstavljeni modeli rezervoarja ob upostevanju gibanja goriva zagotavljajo mnogo natančnejše rezultate v primerjavi z znanimi poenostavljenimi modeli.
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2006
Number of pages:str. 85-100
Numbering:Letn. 52, št. 2
PID:20.500.12556/DKUM-52875 New window
UDC:621.431.37:629.063.6:004.94
ISSN on article:0039-2480
COBISS.SI-ID:9188123 New window
NUK URN:URN:SI:UM:DK:EWMSTO7B
Publication date in DKUM:10.07.2015
Views:777
Downloads:48
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:Computational modelling of fuel motion and its interaction with the reservoir structure
Abstract:Computational models of vehicles for crash simulations are ever more precisely describing the behaviour of real vehicles. A fuel-tank is a typical vehicle element that has been very simplified in the computational models used so far. Such models have considered only the influence of the fuel mass inertia, which was point-wise connected to the tank walls, with total neglect of the fuel motion in the tank. This paper describes new computational models that allow for a simulation of the fuel-tank deformation considering the fuel motion during a vehicle crash. For this purpose four different methods for describing fluid motion (Lagrangian, Eulerian, Arbitrary Lagrange-Eulerian description - ALE, SPH) were evaluated on a simple reservoir problem, analysed with the explicit dynamic code LS-DYNA. The computational results were compared with previously published experimental observations and a good correlation of the results was observed. The most appropriate methods, SPH and ALE, were afterwards used in dynamic simulations of a real fuel-tank. The simulations showed that by also taking into consideration the fuel motion, the proposed computational models provide more accurate results in comparison with the previously used, simplified models.
Keywords:fuel motion, Lagrangerian description, Eulerian description, ALE, SPH, fluid structure interaction


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