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ISSN: 0324-6051    frecuency : 4   format : Electrónica

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Volume 57 Number 2 Year 2013

8 articles in this issue 

Alessandro Corsini, Anthony G. Sheard

The paper presents a design procedure for anti-vortex end-plates that are fitted to tip limited blades of the subsonic axial fans utilised in compact cooling units. The authors study the impact of tip leakage vortex bursting on the performance of the stud... see more

Pags. 3 - 16  

János Csemniczky

At the prerotation control there is an adjustable blade row before the pump impeller for producing a peripheral component of the inlet flow velocity. The effect of prerotation is changing along the H - Q characteristic and the range of control depends on ... see more

Pags. 17 - 21  

Csaba Hos, Balázs Kuti

The stability properties of the feedback control of a hydraulic cylinder is analysed with an emphasis on the effect of the control delay due to the discrete sampling. A simple theoretical model is developed for low-load cases, i.e. if the forces acting of... see more

Pags. 23 - 27  

Péter Csizmadia, Csaba Hos

The aim of this paper is to study the cyclone-like flow inside a hydrodynamic mixer experimentally, with a special emphasis on the differences in the flow field in the case of Newtonian and non-Newtonian fluids. The mixer consists a cylindrical body with ... see more

Pags. 29 - 35  

Tamás Benedek, Péter Tóth

This paper summarizes a case study example on the methodology used for phased array microphone measurements in a realistic acoustic environment. A ducted fan rotor is measured in an environment, where structure born noise and aerodynamically generated noi... see more

Pags. 37 - 46  

Attila Kun-Balog, Krisztián Sztankó

Liquid fuels have to be atomized before combustion. In micro gas turbines twin-fluid atomizers are widely used for this purpose. In this type of atomizers generally high velocity air flow disintegrates the liquid fuel stream into droplets, but superheated... see more

Pags. 47 - 51  

Lilla Nádai, Bálint Katona, Attila Terdik, Eszter Bognár

We studied chemical etching treatment on the surface of titanium implant materials, specifically 2 mm thick Grade 2 and nanoparticulate titanium discs, aiming to modify the surface roughness of samples. For chemical etching we investigated changes in reac... see more

Pags. 53 - 57  

Zoltán Juhász, Ambrus Zelei

Nature is a storehouse of great ideas, which are mostly so well planned, that engineers can apply them directly via examining, understanding and imitating the natural working principles. Snakes and worms can be found in almost every region of our planet. ... see more

Pags. 59 - 64