Search results

1

Modelling and simulation of the magnesium primary phase crystallization in the AZ91/SiCp composite dependent on mass fraction of SiCp

100%

Lelito J., Krawiec H., Vignal V., Gracz B., Żak P. L., Szucki M.

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issue 1

2

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

100%

Sowiński J., Krawczyk M., Dziubiński M.

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vol. 33

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issue 1

63-71

EN

The aim of the study was the implementation of a numerical simulation of the air-water two-phase flow in the minichannel and comparing results obtained with the values obtained experimentally. To perform the numerical simulations commercial software ANSYS FLUENT 12 was used. The first step of the study was to reproduce the actual research installation as a three-dimensional model with appropriate and possible simplifications - future computational domain. The next step was discretisation of the computational domain and determination of the types of boundary conditions. ANSYS FLUENT 12 has three built-in basic models with which a two-phase flow can be described. However, in this work Volume-of-Fluid (VOF) model was selected as it meets the established requirements of research. Preliminary calculations were performed for a simplified geometry. The calculations were later verified whether or not the simplifications of geometry were chosen correctly and if they affected the calculation. The next stage was validation of the chosen model. After positive verification, a series of calculations was performed, in which the boundary conditions were the same as the starting conditions in laboratory experiments. A satisfactory description of the experimental data accuracy was attained.

3

Modeling and Experimental Verification of Ultrasound Transmission in Electro Insulation Oil

100%

Cichoń A., Wotzka D., Boczar T.

Archives of Acoustics

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2012

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vol. 37

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issue 1

4

Multipoint ultrasonic diagnostics systemof prestressed t-beams

100%

Mariak A., Wilde K.

Archives of Civil Engineering

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2014

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issue 4

5

Experimental and Numerical Studies of the Behavior and Energy Absorption of Foam-Filled Circular Tubes

100%

Kaczyński P., Karliński J., Hawryluk M., Kaczyński P., Karliński J., Hawryluk M.

Archives of Metallurgy and Materials

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2020

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vol. 65

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issue 2

6

Modelling of a micro-channel heat sink for cooling of high-power laser diode arrays

100%

Furmański P., Thualfaqir K., Łapka P.

Archives of Thermodynamics

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2018

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vol. 39

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issue 3

7

Application of Thermo-Bimaterial Effect in Designing of Snap-Fit Joints

100%

Golewski P., Sadowski T.

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issue 3

8

Influence of Selected Parameters on Ash Particle Trajectories When Modelling Deposition on Superheater Tubes in Pulverised Coal Boilers Using Fluent Code

100%

Wacławiak K., Kalisz S.

Chemical and Process Engineering

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2014

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vol. 35

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issue 3

305-316

EN

Widely used CFD codes enable modelling of PC boilers operation. One of the areas where these numerical simulations are especially promising is predicting deposition on heat transfer surfaces, mostly superheaters. The basic goal of all simulations is to determine trajectories of ash particles in the vicinity of superheater tubes. It results in finding where on the surface the tube will be hit by particles, and what diameter and mass flow of the particles are. This paper presents results of CFD simulations for a single tube and a bundle of in-line tubes as well. It has been shown that available parameters like ash particle density, shape factor, reflection coefficients affect the trajectories in a different way. All the simulations were carried out with Fluent code of Ansys software.

9

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

100%

Krawczyk M., Kamiński K., Petera J.

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vol. 33

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issue 1

167-183

EN

A new concept of an electrostatic spray column for liquid-liquid extraction was investigated. An important problem for separation processes is the presence of azeotropic or close-boiling mixtures in their production, for example heptane with ethanol, since the separation is impossible by ordinary distillation. The use of ionic liquids (IL) as a dispersed solvent specially engineered for any specific organic mixture in terms of selectivity is a key factor to successful separation. As IL present particularly attractive combination of favorable characteristics for the separation of heptane and ethanol, in this work we use 1-butyl-3-methylimidazolium methyl sulfate [BMIM][MeSO4]. Because of high viscosity and relatively high cost of IL a new technique was introduced, consisting in the electrostatically spray generation to enhance the mass transport between the phases. In order to optimally design the geometry of the contactor a series of numerical simulation was performed. Especially multi-nozzle variants for better exploitation of contactor volume were investigated. Experiments showed excellent possibility of control of the dispersion characteristics by applied voltage and thus control of the rate of extraction. The preliminary simulations based on our mathematical model for a three nozzle variant exhibited visual agreement with the theory of electrostatics.

10

Prediction of transonic wind tunnel test section geometry – a numerical study

89%

Selerowicz W., Selerowicz W.

Archive of Mechanical Engineering

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2009

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vol. 56

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issue 2

11

Experimental verification of numerical simulation of projectile impact on ballistic shields

89%

Zatorski Z., Zatorski Z.

Archive of Mechanical Engineering

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2013

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vol. 60

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issue 4

12

Numerical and laboratory tests of aluminum profile connection using the “popular lock”

88%

Golewski P., Sadowski T.

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issue 1

13

High performance optical shutter design with scalable aperture

88%

Pokryszka P., Wośko M., Kijaszek W., Paszkiewicz R., Pokryszka P., Wośko M., Kijaszek W., Paszkiewicz R.

Bulletin of the Polish Academy of Sciences: Technical Sciences

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2021

14

Prediction of the Height of Overburden Fractured Zone in Deep Coal Mining: Case Study

88%

Yangchun H., Jiulong C., Qisong H., Steve Z. D. H., Jin Z., Shaohua H., Yun L.

Archives of Mining Sciences

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2018

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vol. 63

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issue 3

15

CFD Numerical Simulation of Biodiesel Synthesis in a Spinning Disc Reactor

88%

Wen Z., Petera J.

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issue 1

21-37

EN

In this paper a two-disc spinning disc reactor for intensified biodiesel synthesis is described and numerically simulated. The reactor consists of two flat discs, located coaxially and parallel to each other with a gap of 0.2 mm between the discs. The upper disc is located on a rotating shaft while the lower disc is stationary. The feed liquids, triglycerides (TG) and methanol are introduced coaxially along the centre line of rotating disc and stationary disc. Fluid hydrodynamics in the reactor for synthesis of biodiesel from TG and methanol in the presence of a sodium hydroxide catalyst are simulated, using convection-diffusion-reaction species transport model by the CFD software ANSYS©Fluent v. 13.0. The effect of the upper disc’s spinning speed is evaluated. The results show that the rotational speed increase causes an increase of TG conversion despite the fact that the residence time decreases. Compared to data obtained from adequate experiments, the model shows a satisfactory agreement.

16

Influence of Selected Parameters on Ash Particle Trajectories When Modelling Deposition on Superheater Tubes in Pulverised Coal Boilers Using Fluent Code

88%

Wacławiak K., Kalisz S.

|

issue 3

17

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

88%

Krawczyk M., Kamiński K., Petera J.

Chemical and Process Engineering

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2012

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issue 1

18

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

88%

Sowiński J., Krawczyk M., Dziubiński M.

Chemical and Process Engineering

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2012

|

issue 1

19

The Influence Of Calcite On The Ash Flow Temperature For Semi-Anthracite Coal From Donbas District

88%

Čarnogurská M., Příhoda M., Pyszko R., Širillová Ľ., Palkóci J.

Chemical and Process Engineering

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2014

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vol. 35

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issue 4

515-525

EN

This paper presents the results of research focused on the lowering of ash flow temperature at semianthracite coal from Donbas district by means of additive (calcite) dosing. Ash fusion temperatures were set for two coal samples (A, B) and for five various states (samples of ash without any additives, with 1%, with 3%, with 5% and with 7% of the additive) in total. The macroscopicphotographic method was used for identifying all specific temperatures. Obtained outputs prove that A type coal has a lower value of sphere temperature than B type coal in the whole scope of percentage representation of the additive. The flow temperature dropped in total from 1489 °C to 1280 °C, i.e. by 14% during the test of coal of type A with 7% of the additive; while it was near 10% for coal of type B (from 1450 °C to 1308 °C). Numerical simulations of the process showed that it is not effective to add an additive with a grain size lower than 280 μm by means of wastevapour burners.

20

The effect of fractionality nature in differences between computer simulation and experimental results of a chaotic circuit

88%

Faraji S., Tavazoei M.

Open Physics

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2013

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vol. 11

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issue 6

836-844

EN

In practice, some differences are usually observed between computer simulation and experimental results of a chaotic circuit. In this paper, it is tried to obtain computer simulation results having more correlation with those obtained in practice by using more realistic models for chaotic circuits. This goal is achieved by considering the fractionality nature of electrical capacitors in the model of a chaotic circuit.

Refine search results

Modelling and simulation of the magnesium primary phase crystallization in the AZ91/SiCp composite dependent on mass fraction of SiCp

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

Modeling and Experimental Verification of Ultrasound Transmission in Electro Insulation Oil

Multipoint ultrasonic diagnostics systemof prestressed t-beams

Experimental and Numerical Studies of the Behavior and Energy Absorption of Foam-Filled Circular Tubes

Modelling of a micro-channel heat sink for cooling of high-power laser diode arrays

Application of Thermo-Bimaterial Effect in Designing of Snap-Fit Joints

Influence of Selected Parameters on Ash Particle Trajectories When Modelling Deposition on Superheater Tubes in Pulverised Coal Boilers Using Fluent Code

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

Prediction of transonic wind tunnel test section geometry – a numerical study

Experimental verification of numerical simulation of projectile impact on ballistic shields

Numerical and laboratory tests of aluminum profile connection using the “popular lock”

High performance optical shutter design with scalable aperture

Prediction of the Height of Overburden Fractured Zone in Deep Coal Mining: Case Study

CFD Numerical Simulation of Biodiesel Synthesis in a Spinning Disc Reactor

Influence of Selected Parameters on Ash Particle Trajectories When Modelling Deposition on Superheater Tubes in Pulverised Coal Boilers Using Fluent Code

Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

The Influence Of Calcite On The Ash Flow Temperature For Semi-Anthracite Coal From Donbas District

The effect of fractionality nature in differences between computer simulation and experimental results of a chaotic circuit