20.500.12556/RUL-124121 Modeling injection molding of high-density polyethylene with crystallization in open-source software This work investigates crystallization modeling by modifying an open-source computational fluid dynamics code OpenFOAM. The crystallization behavior of high-density polyethylene (HDPE) is implemented according to theoretical and experimental literature. A number of physical interdependencies are included. The cavity is modeled as deformable. The heat transfer coefficient in the thermal contact towards the mold depends on contact pressure. The thermal conductivity is pressure- and crystallinity-dependent. Specific heat depends on temperature and crystallinity. Latent heat is released according to the crystallization progress and temperature. Deviatoric elastic stress is evolved in the solidified material. The prediction of the cavity pressure evolution is used for the assessment of the solution quality because it is experimentally available and governs the residual stress development. Insight into the thermomechanical conditions is provided with through-thickness plots of pressure, temperature and cooling rate at different levels of crystallinity. The code and simulation setup are made openly available to further the research on the topic. injection molding numerical simulation polymer crystallization open-source code injekcijsko brizganje numerične simulacije kristalizacija polimerov odprtokodni programi true false true Angleški jezik Slovenski jezik Članek v reviji 2021-01-04 09:54:19 2021-01-04 09:54:24 2022-09-04 03:57:49 0000-00-00 00:00:00 2021 0 0 15 str. iss. 1, art. 138 Vol. 13 Jan. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.876.5:621.767(045) 2073-4360 10.3390/polym13010138 45067779 RAZ_Krebelj_Kristjan_2021.pdf RAZ_Krebelj_Kristjan_2021.pdf 1 7D3D11AA6E89946D685AE3C1EEC95546 c2c78e5586976a211b9a3c39bb066e08b321eef34dab2c186ede8bd5e906a453 eb4dee3a-8d92-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153747 https://www.mdpi.com/2073-4360/13/1/138 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=139512 Fakulteta za strojništvo 0 0 0