Journal of Fluid Technics, Advanced Engineering and Technologies
Ventil is a peer-reviewed open access scientific as well as professional journal.
The journal’s basic mission is to transfer knowledge into practice, further develop and popularize the fields of fluid mechanics, advanced engineering and technologies, as well as to care for professional terminology in the aforementioned fields.
Publisher: University of Ljubljana, Faculty of Mechanical Engineering
Editor-in-chief: izr. prof. dr. Miroslav Halilovič
Assistant editor: izr. prof. dr. Franc Majdič
Technical editor: Roman Putrih
THE JOURNAL IS IN OPEN ACCESS
Ventil is open access journal with no article publishing charges. Authors retain copyright of their work and allow it to be shared and reused, provided that it is correctly cited.
Articles in Journal Ventil are published under the Creative Commons Attribution 4.0 International License.
The Journal is subsidized by the Slovenian Research and Innovation Agency (ARIS).
Publication frequency: 6 issues per year.
The journal Ventil is indexed in the DOAJ database.
Current issue: June, 32 / 2026 / 3
Previous issues of the magazine can be viewed in the ARCHIVE section.
Featured articles
INNO2MARE – Pilot projects to strengthen the capacity and scientific excellence of Slovenian and Croatian innovation ecosystems
The LASIM laboratory at the Faculty of Mechanical Engineering, University of Ljubljana, is coordinator of the INNO2MARE project, which aims to strengthen the capacities for excellence in the innovation ecosystem of Western Slovenia and the Adriatic Croatia through a set of jointly designed and implemented actions that will support the digital and green transition of the maritime and related industries.
Petra Pintar, doc. dr. Marko Šimic, prof. dr. Niko Herakovič, univ. dipl. inž., all from Faculty of Mechanical Engineering, University of Ljubljana
Durability tests of 3D printed water-hydraulic proportional directional control valves
Despite the fact that water is rarely used in power-control hydraulics (PCH), advanced technologies such as 3D printing of metal components are opening new possibilities for the wider adoption of water PCH. With metal 3D printing, valve mass can be significantly reduced while improving flow characteristics, thanks to the ability to produce complex internal geometries not achievable with traditional methods.
Žan Spačal, študent. izr. prof. dr. Franc Majdič, univ. dipl. inž., prof. dr. Mitjan Kalin, univ. dipl-. inž., dr. Ana Trajkovski, univ. dipl. inž., Univerza v Ljubljani, Fakulteta za strojništvo
LEAP – razvoj zaščitne embalaže iz alternativnih lignoceluloznih vlaken
Laboratorij LADISK na Fakulteti za strojništvo Univerze v Ljubljani deluje kot koordinator projekta LEAP, katerega cilj je razvoj naslednje generacije trajnostne funkcionalne em- balaže. Ta vključuje gradnike iz odpadne biomase invazivnih tujerodnih rastlinskih vrst in omogoča izdelavo novih, konstrukcijsko visoko zmogljivih embalažnih rešitev. Projekt je izjemno pomemben, saj se osredotoča na trajnostni prehod v krožno ekonomijo, ki te- melji na biološki razgradljivosti in zmanjšanju porabe deviških materialnih virov, obenem pa obravnava problematiko recikliranja odpadkov tujerodnih rastlinskih vrst.
Gregor Čepon, Gregor Ševerkar, Miha Pogačar, Urška Kavčič, David Ravnjak, Jawad Elomari, Aleš Mihelič, Miha Bolteža
Science and expert articles
Monograde or Multigrade Hydraulic Oils?
In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils. Hydraulic oil differs from all other lubricants because it must primarily fulfil two main functions: energy transmission and lubrication. In addition, it must prevent foaming, release entrained air bubbles, be thermally, oxidatively …
The importance to consider advanced fluid properties in flow simulation of hydrostatic machines (Part 2)
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…
From ERP Data to a Feasible Production Plan with a Digital Twin in the GoSoft Environment
In modern manufacturing, competitiveness is no longer determined solely by production quality, but by a company’s ability to manage a complex combination of orders, deadlines, materials, machines, people and other limited resources quickly and reliably. This is precisely where traditional ERP systems often reach their limits…