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Mechanism of primary fragmentation of coal in fluidized bed
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2016)
In order to lay a foundation of a credible primacy fragmentation model, a theoretical analysis of the thermo-mechanical processes in a devolatilizing solid fuel particle was carried out. The devolatilization model comprises ...
Impact of co2 concentration on indoor air quality and correlation with relative humidity and indoor air temperature in school buildings in Serbia
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2016)
Previous studies have shown that poorly ventilated classrooms can have negative impact on the health of children and school staff. In most cases, schools in Serbia are ventilated naturally. Considering their high occupancy, ...
Green living roof implementation and influences of the soil layer on its properties
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2016)
Affected by undeniable climatic change, the temperature of the urban areas rises continually, increasing rapidly the energy problem of cities and amplifying the pollution problems. The thermal stress is increased, thus ...
Numerical research of the compressible flow in a vortex tube using openfoam software
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2017)
The work presented in this paper is dealing with numerical simulation of energy separation mechanism and flow phenomena within a Ranque-Hilsch vortex tube. Simulation of turbulent, compressible, highly swirling flow inside ...
An experimental investigation and statistical analysis of turbulent swirl flow in a straight pipe
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2017)
This paper presents results of our own velocity field measurements in a straight pipe swirl flow. These studies were conducted using an originally designed hot wire probe. Due to the specially tailored shape of the probe, ...
Enhanced control of radiator heating system
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2018)
In this paper a radiator heating system of a building is considered. For the purpose of the heating system optimization, a mathematical model of the system is developed. The linear quadratic algorithm with integral action ...
Mathematical model of energy efficiency in internal spur gears
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2019)
The impact of geometric parameters of teeth and lubricating oils to the efficiency of involute internal spur gears, when the transverse contact ratio is 2 lt epsilon(alpha) lt = 3, has been analyzed in this paper. The ...
Measurement of thermal emission during cutting of materials using abrasive water jet
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2017)
This article deals with measurement of the thermal gradient on material during abrasive water jet cutting. The temperature was measured by thermocamera before the technological process started, during the abrasive water ...
Boiling heat transfer modelling a review and future prospectus
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2019)
This paper reviews the current status of boiling heat transfer modelling, discusses the need for its improvement due to unresolved intriguing experimental findings and emergence of novel technical applications and outlines ...
Finite element modelling of creep process - steady state stresses and strains
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
Finite element modelling of steady state creep process has been described. Using an analogy of visco-plastic problem with a described procedure, the finite element method has been used to calculate steady state stresses ...