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Entropy and fractal nature
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
Existing, the biunivocal correspondents between the fractal nature and the nature discovered by fractals is the source and meeting point from those two aspects which are similar to the thermodynamically philosophical point ...
Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2021)
The paper presents the integrated application of two methods during testing HVAC system efficiency in the cabins of HUMMER.1151A1 and OAR 1RL-128D offroad vehicles. Spatial measurements of change in air temperature per ...
Study of vacuum and freeze drying of bee honey
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
The aim of this research is to study the drying kinetics of vacuum-dried and freeze-dried bee honey produced from two different varieties: Sunflower honey (Helianthus Annuus L.) and Acacia honey (Robinia pseudo acacia L.). ...
Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
This part of the paper presents the relation between the working conditions, nozzle geometry, nozzle diameter, and jet behavior. Experimental work has been made by impinging the submerged jets on the copper specimen as a ...
Continuous slow dynamic slope approach for stationary base internal combustion engine mapping
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
Engine control optimization, with its always growing complexity, is in permanent focus of engine researchers and developers all over the world. Automotive engines are dominantly used in dynamic conditions, but generally, ...
Turbulence recognition in free convective flow by thermal-video post-processing in the case of a thermal power plant mill
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2021)
This paper presents a study of a free convection flow around the walls of a ventilation mill of the Thermal Power Plant "Kostolac B", Kostolac, Serbia. A combined method consists of thermography and software post-processing, ...
Numerical analyses of a hydraulic hybrid powertrain system for a transit bus
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
A dynamic programming optimization algorithm has been applied on a transit bus model in MATLAB in order to assess the fuel economy improvement potential by implementing a hydraulic hybrid powertrain system. The numerical ...
Experimental and numerical study of temperature field during hard-facing of different carbon steels
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
In this research the 3-D transient non-linear thermal analysis of the hard-facing process was performed by using the experimental testing and finite element method. Testing was done at three different carbon steels and the ...
Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
This paper presents the dependency of the jet power and the cavitation intensity on the working conditions of the cavitating and non-cavitating jet flow. This dependency is indicated by the cavitation erosion process and ...
Fluid dynamic forces in the main steam pipeline of thermal power plant upon stop valves closure
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2020)
A steam turbine trip is followed by a prompt closure of stop valves in front of the turbine and consequently to a pressure rise in the main steam pipeline. This steam hammer transient leads to the generation of intensive ...