The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness

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Izvoz citacije: ABNT
DULAR, Matevž ;ŠIROK, Brane ;STOFFEL, Bernd .
The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 51, n.3, p. 132-145, august 2017. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/>. Date accessed: 02 apr. 2020. 
doi:http://dx.doi.org/.
Dular, M., Širok, B., & Stoffel, B.
(2005).
The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness.
Strojniški vestnik - Journal of Mechanical Engineering, 51(3), 132-145.
doi:http://dx.doi.org/
@article{.,
	author = {Matevž  Dular and Brane  Širok and Bernd  Stoffel},
	title = {The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {51},
	number = {3},
	year = {2005},
	keywords = {cavitation; erosion; water with gas content; flow velocity; },
	abstract = {A study of the influence of the gas content of water and the flow velocity on cavitation erosion aggressiveness was performed. A cavitation tunnel with a single hydrofoil was used for the experiments. While the cavitation number and the mean flow velocity remained constant throughout the tests, the gas content of the water was changed in steps from low (approximately 1%) to high (4 %). The gas content of the water was adjusted with a bubble generator. In addition tests at a constant cavitation number and water gas content but different mean flow velocities (10, 13 and 16 m/s) were made. A thin copper foil, applied to the surface of the hydrofoil, was used as an erosion sensor. Images of the damaged, copper-coated hydrofoil surface were taken at an appropriate magnification. A pit-count method, based on computer-aided image processing, was used for direct measurements of the cavitation erosion by evaluating the damage on the surface of the hydrofoil. Clear evidence for the influence of the gas content and the velocity on the erosion intensity was found. The cavitation erosive aggressiveness exponentially drops when the content of the water is increased. A power law was confirmed for the velocity’s influence on the cavitation erosive aggressiveness. The presented results promise the possibility of deriving a cavitation erosion model and the possibility of cavitation erosion prediction using only numerical tools in the future.},
	issn = {0039-2480},	pages = {132-145},	doi = {},
	url = {https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/}
}
Dular, M.,Širok, B.,Stoffel, B.
2005 August 51. The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 51:3
%A Dular, Matevž 
%A Širok, Brane 
%A Stoffel, Bernd 
%D 2005
%T The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness
%B 2005
%9 cavitation; erosion; water with gas content; flow velocity; 
%! The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness
%K cavitation; erosion; water with gas content; flow velocity; 
%X A study of the influence of the gas content of water and the flow velocity on cavitation erosion aggressiveness was performed. A cavitation tunnel with a single hydrofoil was used for the experiments. While the cavitation number and the mean flow velocity remained constant throughout the tests, the gas content of the water was changed in steps from low (approximately 1%) to high (4 %). The gas content of the water was adjusted with a bubble generator. In addition tests at a constant cavitation number and water gas content but different mean flow velocities (10, 13 and 16 m/s) were made. A thin copper foil, applied to the surface of the hydrofoil, was used as an erosion sensor. Images of the damaged, copper-coated hydrofoil surface were taken at an appropriate magnification. A pit-count method, based on computer-aided image processing, was used for direct measurements of the cavitation erosion by evaluating the damage on the surface of the hydrofoil. Clear evidence for the influence of the gas content and the velocity on the erosion intensity was found. The cavitation erosive aggressiveness exponentially drops when the content of the water is increased. A power law was confirmed for the velocity’s influence on the cavitation erosive aggressiveness. The presented results promise the possibility of deriving a cavitation erosion model and the possibility of cavitation erosion prediction using only numerical tools in the future.
%U https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/
%0 Journal Article
%R 
%& 132
%P 14
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 51
%N 3
%@ 0039-2480
%8 2017-08-18
%7 2017-08-18
Dular, Matevž, Brane  Širok, & Bernd  Stoffel.
"The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness." Strojniški vestnik - Journal of Mechanical Engineering [Online], 51.3 (2005): 132-145. Web.  02 Apr. 2020
TY  - JOUR
AU  - Dular, Matevž 
AU  - Širok, Brane 
AU  - Stoffel, Bernd 
PY  - 2005
TI  - The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - cavitation; erosion; water with gas content; flow velocity; 
N2  - A study of the influence of the gas content of water and the flow velocity on cavitation erosion aggressiveness was performed. A cavitation tunnel with a single hydrofoil was used for the experiments. While the cavitation number and the mean flow velocity remained constant throughout the tests, the gas content of the water was changed in steps from low (approximately 1%) to high (4 %). The gas content of the water was adjusted with a bubble generator. In addition tests at a constant cavitation number and water gas content but different mean flow velocities (10, 13 and 16 m/s) were made. A thin copper foil, applied to the surface of the hydrofoil, was used as an erosion sensor. Images of the damaged, copper-coated hydrofoil surface were taken at an appropriate magnification. A pit-count method, based on computer-aided image processing, was used for direct measurements of the cavitation erosion by evaluating the damage on the surface of the hydrofoil. Clear evidence for the influence of the gas content and the velocity on the erosion intensity was found. The cavitation erosive aggressiveness exponentially drops when the content of the water is increased. A power law was confirmed for the velocity’s influence on the cavitation erosive aggressiveness. The presented results promise the possibility of deriving a cavitation erosion model and the possibility of cavitation erosion prediction using only numerical tools in the future.
UR  - https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/
@article{{}{.},
	author = {Dular, M., Širok, B., Stoffel, B.},
	title = {The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {51},
	number = {3},
	year = {2005},
	doi = {},
	url = {https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/}
}
TY  - JOUR
AU  - Dular, Matevž 
AU  - Širok, Brane 
AU  - Stoffel, Bernd 
PY  - 2017/08/18
TI  - The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 51, No 3 (2005): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - cavitation, erosion, water with gas content, flow velocity, 
N2  - A study of the influence of the gas content of water and the flow velocity on cavitation erosion aggressiveness was performed. A cavitation tunnel with a single hydrofoil was used for the experiments. While the cavitation number and the mean flow velocity remained constant throughout the tests, the gas content of the water was changed in steps from low (approximately 1%) to high (4 %). The gas content of the water was adjusted with a bubble generator. In addition tests at a constant cavitation number and water gas content but different mean flow velocities (10, 13 and 16 m/s) were made. A thin copper foil, applied to the surface of the hydrofoil, was used as an erosion sensor. Images of the damaged, copper-coated hydrofoil surface were taken at an appropriate magnification. A pit-count method, based on computer-aided image processing, was used for direct measurements of the cavitation erosion by evaluating the damage on the surface of the hydrofoil. Clear evidence for the influence of the gas content and the velocity on the erosion intensity was found. The cavitation erosive aggressiveness exponentially drops when the content of the water is increased. A power law was confirmed for the velocity’s influence on the cavitation erosive aggressiveness. The presented results promise the possibility of deriving a cavitation erosion model and the possibility of cavitation erosion prediction using only numerical tools in the future.
UR  - https://www.sv-jme.eu/sl/article/the-influence-of-the-gas-content-of-water-and-the-flow-velocity-on-cavitation-erosion-aggressiveness/
Dular, Matevž, Širok, Brane, AND Stoffel, Bernd.
"The Influence of the Gas Content of Water and the Flow Velocity on Cavitation Erosion Aggressiveness" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 51 Number 3 (18 August 2017)

Avtorji

Inštitucije

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • Darmstadt University of Technology, Germany

Informacije o papirju

Strojniški vestnik - Journal of Mechanical Engineering 51(2005)3, 132-145

A study of the influence of the gas content of water and the flow velocity on cavitation erosion aggressiveness was performed. A cavitation tunnel with a single hydrofoil was used for the experiments. While the cavitation number and the mean flow velocity remained constant throughout the tests, the gas content of the water was changed in steps from low (approximately 1%) to high (4 %). The gas content of the water was adjusted with a bubble generator. In addition tests at a constant cavitation number and water gas content but different mean flow velocities (10, 13 and 16 m/s) were made. A thin copper foil, applied to the surface of the hydrofoil, was used as an erosion sensor. Images of the damaged, copper-coated hydrofoil surface were taken at an appropriate magnification. A pit-count method, based on computer-aided image processing, was used for direct measurements of the cavitation erosion by evaluating the damage on the surface of the hydrofoil. Clear evidence for the influence of the gas content and the velocity on the erosion intensity was found. The cavitation erosive aggressiveness exponentially drops when the content of the water is increased. A power law was confirmed for the velocity’s influence on the cavitation erosive aggressiveness. The presented results promise the possibility of deriving a cavitation erosion model and the possibility of cavitation erosion prediction using only numerical tools in the future.

cavitation; erosion; water with gas content; flow velocity;