Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining

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Izvoz citacije: ABNT
GRGURAŠ, Damir ;STERLE, Luka ;MALNERŠIČ, Aleš ;KASTELIC, Luka ;COURBON, Cedric ;PUŠAVEC, Franci .
Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 67, n.1-2, p. 3-10, february 2021. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/>. Date accessed: 25 jul. 2024. 
doi:http://dx.doi.org/10.5545/sv-jme.2020.7076.
Grguraš, D., Sterle, L., Malneršič, A., Kastelic, L., Courbon, C., & Pušavec, F.
(2021).
Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining.
Strojniški vestnik - Journal of Mechanical Engineering, 67(1-2), 3-10.
doi:http://dx.doi.org/10.5545/sv-jme.2020.7076
@article{sv-jmesv-jme.2020.7076,
	author = {Damir  Grguraš and Luka  Sterle and Aleš  Malneršič and Luka  Kastelic and Cedric  Courbon and Franci  Pušavec},
	title = {Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {67},
	number = {1-2},
	year = {2021},
	keywords = {flow analysis; flow velocity; droplet size; single-channel supply;  liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining},
	abstract = {Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.},
	issn = {0039-2480},	pages = {3-10},	doi = {10.5545/sv-jme.2020.7076},
	url = {https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/}
}
Grguraš, D.,Sterle, L.,Malneršič, A.,Kastelic, L.,Courbon, C.,Pušavec, F.
2021 February 67. Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 67:1-2
%A Grguraš, Damir 
%A Sterle, Luka 
%A Malneršič, Aleš 
%A Kastelic, Luka 
%A Courbon, Cedric 
%A Pušavec, Franci 
%D 2021
%T Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining
%B 2021
%9 flow analysis; flow velocity; droplet size; single-channel supply;  liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining
%! Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining
%K flow analysis; flow velocity; droplet size; single-channel supply;  liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining
%X Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.
%U https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/
%0 Journal Article
%R 10.5545/sv-jme.2020.7076
%& 3
%P 8
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 67
%N 1-2
%@ 0039-2480
%8 2021-02-26
%7 2021-02-26
Grguraš, Damir, Luka  Sterle, Aleš  Malneršič, Luka  Kastelic, Cedric  Courbon, & Franci  Pušavec.
"Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining." Strojniški vestnik - Journal of Mechanical Engineering [Online], 67.1-2 (2021): 3-10. Web.  25 Jul. 2024
TY  - JOUR
AU  - Grguraš, Damir 
AU  - Sterle, Luka 
AU  - Malneršič, Aleš 
AU  - Kastelic, Luka 
AU  - Courbon, Cedric 
AU  - Pušavec, Franci 
PY  - 2021
TI  - Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2020.7076
KW  - flow analysis; flow velocity; droplet size; single-channel supply;  liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining
N2  - Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.
UR  - https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/
@article{{sv-jme}{sv-jme.2020.7076},
	author = {Grguraš, D., Sterle, L., Malneršič, A., Kastelic, L., Courbon, C., Pušavec, F.},
	title = {Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {67},
	number = {1-2},
	year = {2021},
	doi = {10.5545/sv-jme.2020.7076},
	url = {https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/}
}
TY  - JOUR
AU  - Grguraš, Damir 
AU  - Sterle, Luka 
AU  - Malneršič, Aleš 
AU  - Kastelic, Luka 
AU  - Courbon, Cedric 
AU  - Pušavec, Franci 
PY  - 2021/02/26
TI  - Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 67, No 1-2 (2021): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2020.7076
KW  - flow analysis, flow velocity, droplet size, single-channel supply,  liquid carbon dioxide – LCO2, minimum quantity lubrication – MQL, LCO2 assisted machining
N2  - Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.
UR  - https://www.sv-jme.eu/sl/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/
Grguraš, Damir, Sterle, Luka, Malneršič, Aleš, Kastelic, Luka, Courbon, Cedric, AND Pušavec, Franci.
"Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 67 Number 1-2 (26 February 2021)

Avtorji

Inštitucije

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 1
  • University of Lyon, École nationale d’ingénieurs de Saint-Étienne (ÉNISE), France 2

Informacije o papirju

Strojniški vestnik - Journal of Mechanical Engineering 67(2021)1-2, 3-10
© The Authors, CC-BY 4.0 Int. Change in copyright policy from 2022, Jan 1st.

https://doi.org/10.5545/sv-jme.2020.7076

Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.

flow analysis; flow velocity; droplet size; single-channel supply; liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining