TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš S.
AU  - Radović, Nenad
AU  - Bonyar, Attila
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3418
AB  - In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Multiphase Flow
T1  - The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process
EP  - 38
SP  - 27
VL  - 83
DO  - 10.1016/j.ijmultiphaseflow.2016.03.005
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš S. and Radović, Nenad and Bonyar, Attila",
year = "2016",
abstract = "In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Multiphase Flow",
title = "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process",
pages = "38-27",
volume = "83",
doi = "10.1016/j.ijmultiphaseflow.2016.03.005"
}

Hutli, E., Nedeljković, M. S., Radović, N.,& Bonyar, A.. (2016). The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow
Pergamon-Elsevier Science Ltd, Oxford., 83, 27-38.
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005

Hutli E, Nedeljković MS, Radović N, Bonyar A. The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow. 2016;83:27-38.
doi:10.1016/j.ijmultiphaseflow.2016.03.005 .

Hutli, Ezddin, Nedeljković, Miloš S., Radović, Nenad, Bonyar, Attila, "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process" in International Journal of Multiphase Flow, 83 (2016):27-38,
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš S.
AU  - Bonyar, Attila
AU  - Radović, Nenad
AU  - Llić, Vojislav
AU  - Debeljković, Aleksandra
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3431
AB  - The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.
PB  - Elsevier Sci Ltd, Oxford
T2  - Tribology International
T1  - The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level
EP  - 97
SP  - 88
VL  - 101
DO  - 10.1016/j.triboint.2016.04.006
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš S. and Bonyar, Attila and Radović, Nenad and Llić, Vojislav and Debeljković, Aleksandra",
year = "2016",
abstract = "The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Tribology International",
title = "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level",
pages = "97-88",
volume = "101",
doi = "10.1016/j.triboint.2016.04.006"
}

Hutli, E., Nedeljković, M. S., Bonyar, A., Radović, N., Llić, V.,& Debeljković, A.. (2016). The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International
Elsevier Sci Ltd, Oxford., 101, 88-97.
https://doi.org/10.1016/j.triboint.2016.04.006

Hutli E, Nedeljković MS, Bonyar A, Radović N, Llić V, Debeljković A. The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International. 2016;101:88-97.
doi:10.1016/j.triboint.2016.04.006 .

Hutli, Ezddin, Nedeljković, Miloš S., Bonyar, Attila, Radović, Nenad, Llić, Vojislav, Debeljković, Aleksandra, "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level" in Tribology International, 101 (2016):88-97,
https://doi.org/10.1016/j.triboint.2016.04.006 . .