10 articles in this issue
Shiv Lal, Subhash Chand Kaushik
In this communication, integrated approach of solar chimney and borehole heat exchanger has been studied by using computational fluid dynamics software. It is observed that, the room temperature can be maintained at 25-30 °C, at 4.9 ACH with this integrat... see more
Bence Tóth, János Vad, Gábor Kotán
The aim of this paper is to present two acoustic beamforming methods developed for rotating sources, namely the Rotating Source Identifier (ROSI) and the Virtual Rotating Array method (VRAM). These were applied onto a series of simulated test cases, and t... see more
Anatolii Fesenko, Fatyma Yevsiukova, Yevheniia Basova, Maryna Ivanova, Vitalii Ivanov
In this article a hardware estimation procedure and optimization of parameters of working fluid cavitation processing are proposed. Here the basic aspects of preparation efficiency and using of water-fuel emulsion are reviewed. An example of estimation of... see more
S. P. Sundar Singh Sivam, Krishnaswamy Saravanan, Nagaraj Pradeep, Karuppiah Sathiya Moorthy, Sankarapandian Rajendrakumar
The welding of Magnesium and Titanium and its alloys has continuously depicted a good challenge for designers and technologists. Ti and Mg alloys, particularly heat-treatable alloys, are difficult to join by fusion fastening techniques. The welding of dis... see more
László Zsíros, József Gábor Kovács
In this paper we are presenting a novel method for color inhomogeneity evaluation. We proved that this method has a higher than 95 % linear correlation coefficient if results are correlated with human visual evaluations.We applied this evaluation method t... see more
Anatoliy Ioffe, Igor Mazur
The paper suggests the design of the locking truck hydraulic valve with electro-hydraulic drive and braking, which eliminates the disadvantages of the known designs hydraulic valves. A mathematical model for the study of operating modes of the proposed de... see more
Bouabdellah Guemou, Abdelali Seddini, Abderrahmane Nekkache Ghenim
The flow pattern around a bridge pier and the scouring phenomenon are very complicated. The basic mechanism causing local scour is the down-flow at the upstream face of the pier. It is understood that the horseshoe vortex is the key mechanism that leads t... see more
Péter Csizmadia, Sára Till
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 impor... see more
Houari Ameur, Youcef Kamla, Djamel Sahel
Design of the impeller blade is a determining factor in power consumption and mixing quality, which determines consequently the cost of the mixing operation. This study explores the flow patterns and the power required for stirring a Newtonian fluid by pa... see more
Béla Zink, József Gábor Kovács
Our goal was the thermal analysis of epoxy acrylate-based prototype molds with numerical simulations, and to compare and analyze the measured values and calculated results. The difference between the thermal calculations and the measured values is signifi... see more