Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Costel UNGUREANU"'
Autor:
Costel UNGUREANU, Adrian PRESURĂ, Radu BOSOANCĂ, Andreea MÂNDRU, Silviu PERIJOC, Victor MIHAI, George COTOC
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 47, Iss 1, Pp 5-8 (2024)
This paper presents a review on ship shaped fish farms as a first step in the research and developing of a modular floating aquaculture platform based on inland river cargo barge design to be exploited under biosecurity and sustainability conditions
Externí odkaz:
https://doaj.org/article/0560a2d05358472096520d88fffeef63
Autor:
Costel UNGUREANU, Adrian PRESURĂ, Radu BOSOANCĂ, Andreea MÂNDRU, Silviu PERIJOC, Victor MIHAI, George COTOC
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 47, Iss 1, Pp 9-17 (2024)
This paper presents results of the research and developing of a modular floating aquaculture platform based on inland river cargo barge design to be exploited under biosecurity and sustainability conditions in the Lower Danube region, aligned with th
Externí odkaz:
https://doaj.org/article/a2871630af884ed98dea10524e105f2c
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 46, Pp 147-154 (2023)
A submarine ballast system represents a combination of dedicated equipment and piping in which the main circulating fluid is either sea water straight from the submarine exterior or air which is compressed at high pressures and then it is stored in p
Externí odkaz:
https://doaj.org/article/2c373bdb020e4560adb02e0255609923
Autor:
Cosmin Sorin Oprea, Costel Ungureanu
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 46, Pp 161-168 (2023)
The steering gear system is part of the group of vital installations for a ship. Its role is to ensure course stability and, at the same time, to facilitate the changes of navigation direction. In this context, the technology for assembling the syste
Externí odkaz:
https://doaj.org/article/8240504de52d47f08fdba0c850eeae04
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 46, Pp 155-160 (2023)
Besides the piping systems used for blowing the main ballast tanks of a submarine by feeding compressed air, a great importance must be given to the flood and vent openings and the mechanisms that operate the covers. From an engineering standpoint, t
Externí odkaz:
https://doaj.org/article/d9a232a500de489eb49b28a6419b0186
Autor:
Costel Ungureanu
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 44, Pp 87-94 (2021)
Starting with January 2013, naval architects faces new challenges, as all ships greater than 400 tons must comply with energy efficiency index (MPEC 62, 2011). From ship hydrodynamics point of view one handy solution is using Energy Saving Devices (E
Externí odkaz:
https://doaj.org/article/94c4999234204000a0e768b3cc05ecb6
Autor:
Costel Ungureanu, Costel Iulian Mocanu
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 43, Pp 109-116 (2020)
The junction flow between an hydrofoil and a plate is manifested by the generation of vortex structures as a result of the interaction between the boundary layer on the plate and the boundary layer on the profile. Two benchmark tests have been identi
Externí odkaz:
https://doaj.org/article/1c9b412594cb4beca877eb837b9a353f
Autor:
Costel Ungureanu, Costel Iulian Mocanu
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 43, Pp 103-108 (2020)
Free surface flow is a hydrodynamic problem with a seemingly simple geometric configuration but with a flow topology complicated by the pressure gradient due to the presence of the obstacle, the interaction between the boundary layer and the free sur
Externí odkaz:
https://doaj.org/article/9f10ab5da90f45609ed2f5241e5446ef
Autor:
Costel Ungureanu, Costel Iulian Mocanu
Publikováno v:
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, Vol 42, Pp 139-146 (2019)
Starting with the 1st of January 2013, all ships greater than 400 gross tons have to comply with design or operational energy efficiency index, in order to reduce the greenhouse emissions. From the naval architect’s point of view, the emission redu
Externí odkaz:
https://doaj.org/article/14fed460c877421e82a31c5c1b8701e5
Autor:
Costel Ungureanu, Adrian Lungu, Viorel Gabriel Maria, Theodore E. Simos, George Psihoyios, Ch. Tsitouras, Zacharias Anastassi
Publikováno v:
AIP Conference Proceedings.
The present study concerns the numerical simulation of the free surface flow around a surface piercing NACA 0012 hydrofoil. RANS equations and the realizable k‐e turbulence model are solved to describe the viscous free‐surface flow around hydrofo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d497205ccab637029c208b7118f92cce
https://doi.org/10.1063/1.3636701
https://doi.org/10.1063/1.3636701