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Roberta Padulano, Giuseppe Del Giudice and Armando Carravetta
An experimental campaign is undertaken in order to investigate the hydraulic features of a vertical drop shaft, also considering the influence of a venting system consisting of a coaxial vertical pipe, projecting within the drop shaft with different plun...
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Brahim Menacer, Mostefa Bouchetara
Pág. 299 - 306
The oil consumption in an internal combustion engine is an important source of pollution and particulate emissions, main efforts are done by the manufacturers to reduce to the maximum the impact of the oil consumption on the emissions of the engine, and ...
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Soheil Jafari, Ahmed Bouchareb and Theoklis Nikolaidis
This paper presents a methodological approach for mathematical modelling and physics-based analysis of accessory gearbox (AGB) thermal behavior in gas turbine aero engines. The AGB structure, as one of the main sources of heat in gas turbine aero engines...
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Ján Takács, Zuzana Straková, Luká? Rácz
Pág. 10 - 15
Circulation pumps are mechanical devices, which are used to create the overpressure required for the transportation of a heat-transfer medium in heating technology as well as in other related technologies. In a circulation pump the mechanical energy gene...
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Yaguang Heng, Kunjian He, Qifeng Jiang, Weibin Zhang, Gérard Bois and Xiaobing Liu
Disc pumps rely on the shear force generated by a co-rotating disc to transport the fluid, the interaction between the fluid and impeller is weak, providing such pumps advantages when handling multi-phase flow. In the present study, a loss analysis is pr...
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Jeremy Roussel, Marc Budinger and Laurent Ruet
Helicopter dronization is expanding, for example, the VSR700 project. This leads to the integration of electromechanical actuators (EMAs) into the primary flight control system (PFCS). The PFCS is in charge of controlling the helicopter flight over its f...
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Antonello Sergej Sirigu, Federico Gallizio, Giuseppe Giorgi, Mauro Bonfanti, Giovanni Bracco and Giuliana Mattiazzo
The wave energy sector is experiencing lively years of conceptual innovation and technological advances. Among the great variety of candidates, only a few are going to be able to reach maturity and, eventually, industrial feasibility and competitiveness....
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Péter Csizmadia, Sára Till
Pág. 305 - 311
This study presents a numerical investigation of flow and rheological behaviour of activated sludge. These materials are usually driven by pumps in wastewater treatment plants. Because of the correct sizing of the pipeline systems, which is of great impo...
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Jian Wang, Xiaohui Luo and Yanhua Sun
In this study, efforts were made to oxidize the Ti3SiC2 coating surface to improve its wear resistance by producing oxide layers and healing microcracks that initiated from the thermal sprayed process. Tribological behaviors of the thermal oxidation-trea...
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Chongbo Jing, Junjie Zhou, Shihua Yuan and Siyuan Zhao
This paper presents a theoretical model and its experimental validation for the pressure ratio of a swash plate-rotating hydraulic transformer. The structure and principle of the new type of transformer are described. The swash plate-rotating type can re...
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Anna E. Frost, Liselotte Ulvgård, Linnea Sjökvist, Sandra Eriksson and Mats Leijon
This paper presents a study on how the power absorption and damping in a linear generator for wave energy conversion are affected by partial overlap between stator and translator. The theoretical study shows that the electrical power as well as the dampi...
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Anna E. Frost, Liselotte Ulvgård, Linnea Sjökvist, Sandra Eriksson and Mats Leijon
This paper presents a study on how the power absorption and damping in a linear generator for wave energy conversion are affected by partial overlap between stator and translator. The theoretical study shows that the electrical power as well as the dampi...
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Anna E. Frost, Liselotte Ulvgård, Linnea Sjökvist, Sandra Eriksson and Mats Leijon
This paper presents a study on how the power absorption and damping in a linear generator for wave energy conversion are affected by partial overlap between stator and translator. The theoretical study shows that the electrical power as well as the dampi...
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Muge Pinar Komu, Hakan Ahmet Nefeslioglu and Candan Gokceoglu
Uncertainties related to runout distances in shallow landslide analyses may not only affect lives but may also result in economic losses. Owing to the increase in shallow landslides, which are especially triggered by heavy rainfall, runout distances have...
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Tabish Alam, Md Irfanul Haque Siddiqui, Hassan Alshehri, Masood Ashraf Ali, Paolo Blecich and Kushagra Saurabh
This paper presents the thermo-hydraulic performance of small conical ribs on the absorber plate of a solar energy air heater (SAH) using exergy analysis. Application of conical protrusion ribs on the absorber is an attractive solution for enhancing the ...
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Vladimir Kodnyanko, Stanislav Shatokhin, Andrey Kurzakov, Yuri Pikalov, Iakov Pikalov, Olga Grigorieva, Lilia Strok and Maxim Brungardt
Aerostatic bearings are attractive, with minimal friction losses, high durability, and environmental friendliness. However, such designs have a number of disadvantages, including low load-bearing capacity and high compliance due to high air compressibili...
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Martin Dobrovolný, Vladimír Habán, Jana Tancjurová and Jan Zbavitel
The limited functionality of seals that are used in hydraulic machines to prevent the liquid from leaking into the bearings may result in decrease in machine efficiency and reliability and may cause an accident of the whole hydraulic machine. However, no...
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Umberto Coronetta and Enrico Sciubba
In the last few years, waste-energy recovery systems based on the Organic Rankine Cycle (ORC) have gained increased attention in the global energy market as a versatile and sustainable technology for thermo-electric energy conversion from low-to-medium t...
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Manuel Hildebrandt, Corina Schwitzke and Hans-Jörg Bauer
The literature already contains some experimental, analytical and numerical investigations on the rubbing and hysteresis behaviour of brush seals. What the investigations have in common is that they were carried out with new and uncontaminated seals, or ...
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Hong Guo, Angela Rina Adukure and Patricia Iglesias
Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential...
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