Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Sorin Holotescu"'
Autor:
Marius Popa, Daniela Susan-Resiga, Lucian Pislaru-Danescu, Nicolae Popa, Sorin Holotescu, J. B. Dumitru, Mihaela Morega, Floriana D. Stoian, Alexandru M. Morega
Publikováno v:
IEEE Transactions on Magnetics. 54:1-14
This paper focuses on a novel, unconventional, hybrid, multi-layered, miniature planar, spiral transformer (MPST) aimed to equip the fly-back convertor for a photovoltaic (PV), energy harvesting (EH) module. The MPST converts the electric parameters
Publikováno v:
2021 12th International Symposium on Advanced Topics in Electrical Engineering (ATEE).
In this paper the results of the investigations on the magnetic and transport properties (rheological, thermal and electrical) of a set of concentrated magnetic nanofluid samples, prepared for use as liquid core in a planar micro-transformer are pres
Autor:
Sorin Holotescu, Floriana D. Stoian
Publikováno v:
Journal of Nanoscience and Nanotechnology. 12:8211-8214
The effect of nanoparticles dispersed in a carrier fluid on the natural convection heat transfer is still raising controversies. While the reported experimental results show no improvement or even worsening of the heat transfer performance of nanoflu
Autor:
Peter Kopcansky, Floriana D. Stoian, L. Tomčo, Milan Timko, P. Rybar, Matus Molcan, Alina Taculescu, Sorin Holotescu, S. Molokac, K. Marton
Publikováno v:
Acta Physica Polonica A. 121:1253-1256
M. Timkoa,∗, P. Kopcansky, M. Molcan, L. Tomco, K. Marton, S. Molokac, P. Rybar, F. Stoian, S. Holotescu and A. Taculescu Institute of Experimental Physics, Slovak Academy of Sciences, 040 01 Kosice, Slovakia Faculty of Aeronautic, Technical Univer
Publikováno v:
Journal of Magnetism and Magnetic Materials. 323:1343-1347
In this study, the semi-empirical equation for the effective thermal conductivity of the Holotescu–Stoian model was applied to a set of four dilutions of a transformer oil based magnetic fluid with magnetite nanoparticles as magnetic phase, using t
Autor:
Floriana D. Stoian, Sorin Holotescu
Publikováno v:
Materialwissenschaft und Werkstofftechnik. 42:379-385
A material property that is of crucial importance for many industrial applications is the effective thermal conductivity. This property is a function of the thermal conductivities of components, their geometry, the spatial distribution of the compone
Publikováno v:
Defect and Diffusion Forum. :725-730
We analyzed the hydrodynamics of the flow into an axis-symmetrical combustion chamber with a central bluff body. Using an axis-symmetrical turbulent flow model we determined the extent of the recirculation region behind the bluff body as well as the
Publikováno v:
Physics Procedia. 9:216-220
A comparison of the effect of an applied magnetic field on the bubble departure diameter in a magnetic nanofluid, for different orientations of the magnetic field gradient with respect to gravity, is presented. Using the instantaneous relative pressu
Autor:
Sorin Holotescu, Floriana D. Stoian
Publikováno v:
Journal of Zhejiang University-SCIENCE A. 10:704-709
We present an empirical model for the effective thermal conductivity (ETC) of a polymer composite that includes dependency on the filler size distribution—chosen as the Rosin-Rammler distribution. The ETC is determined based on certain hypotheses t
Autor:
Alina Taculescu, Michal Rajnak, Peter Kopcansky, Oana Marinica, Milan Timko, Sorin Holotescu, Daniela Resiga, Floriana D. Stoian
Publikováno v:
2013 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED TOPICS IN ELECTRICAL ENGINEERING (ATEE).
Magnetic nanofluids (widely known as ferrofluids or magnetic liquids) have a unique property - they are responsive to the application of a magnetic field, which allows for the possibility of controlling the flow and the convective heat transfer. This