20.500.12556/RUL-186384 Pomembnost uporabe naprednih lastnosti tekočin v tokovnih simulacijah hidrostatičnih strojev Development of energy-consumption digital twins for a discrete production lines Hidrostatični stroji so naprave, ki prenašajo energijo s pomočjo tlaka tekočine, najpogosteje olja ali vode. Delujejo na principu hidrostatike (Pascalov zakon). Simulacija takšnih strojev še vedno zahteva visoko usposobljene inženirje, uporabo naprednih simulacijskih orodij in napreden simulacijski pristop kljub razpoložljivosti sodobnih simulacijskih orodij z dobro prilagojenim grafičnim uporabniškim vmesni- kom in numeričnimi tehnikami. Prispevek predstavlja dejavnosti in napredek pri simulaciji aksialne batne črpalke. Čeprav te stroje podjetje Poclain načrtuje in proizvaja že desetletja, še vedno obstajajo področja, ki niso podrobno raziskana. Napredek pri simulaciji se nanaša predvsem na uporabo zapletenega kinematičnega gibanja strojnih delov, naprednih fizikalnih lastnosti tekočin in tudi tehnik mreženja ter numeričnih algoritmov. V tem članku se osredotočeno na modeliranje naprednih lastnosti tekočin (stisljivost, kavitacija). Numerični pristop je izveden s pomočjo računalniške dinamike tekočin (CFD) v okolju Siemens Simcenter Star-CCM+. Napovedovanje kavitacije je možno z implementacijo obstoječega »polnega modela kavitacije«. Hydrostatic machines are devices that transfer power using pressurized hydraulic fluid within a closed circuit, relying on positive displacement pumps and motors. They convert mechanical energy into fluid pressure and back into mechanical torque. Simulation of such machines still requires highly skilled engineers, use of advanced simulation tools and advanced simulation approach … despite the availability of modern simulation tools with well suited graphical user interface (GUI) and numerical techniques. The paper presents recent activities and progress on simulation of hydrostatic machines – in particular, the axial piston pump and the radial hydraulic motor. Despite that these machines have been designed and produced by Poclain for decades, there are still (design) features and phenomena not being investigated in detail or never being simulated. The simulation advancements mainly refer to the application of complicated kinematic motion, fluid properties, physics to consider as well as mesh and numerical algorithm techniques. In this paper, the focus is given on modelling of advanced fluid properties (e.g. compressibility, cavitation etc.). Fluid with such advanced properties is used in fluid flow simulation. Numerical approach has been performed by means of computational fluid dynamic (CFD) within the environment of Siemens Simcenter Star-CCM+. The anticipation of cavitation has been possible by implementation of existing »full cavitation model«. hidravlični radialni batni motor hidravlična aksialna batna črpalka CFD-simulacija kavitacija batna komora nagibna plošča radial hydraulic motor axial piston pump CFD simulation cavitation piston chamber swash plate true false true Slovenski jezik Angleški jezik Članek v reviji 2026-08-31 14:40:08 2026-08-31 14:40:18 2026-09-03 04:37:40 0000-00-00 00:00:00 2026 0 0 Str. 112-115 št. 2 Letn. 32 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.22 1318-7279 277731075 Celik-Pomembnost_uporabe.pdf Celik-Pomembnost_uporabe.pdf 1 F9CD9F7C92C6C50576CBA6B60657D8D5 4871182881b8e1ba51f93618f4096f5fb3fc31f439a29eef2862f182d5c321d1 ee91b456-a538-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245615 https://revija-ventil.si/wp-content/uploads/Ventil-32-2026-2.pdf 1 b2818907-a538-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245614 Fakulteta za strojništvo Ventil 0 0 0