Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method

Ville S. Lämsä, Juha Virtanen, Aki Kinnunen, Pekka Koskinen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Cavitation is a significant cause of wear, noise and loss of efficiency in marine propellers. In this study the impact forces due to cavitation cloud collapse are investigated in context of ice-propeller interaction. Force measurements from the propeller blade indicate that the hydrodynamic non-contact forces are relevant when the loads on the blade are developed during the ice-propeller interaction. According the measurements one could claim that the measured short duration force peaks are due to cavitation cloud collapse. These cavitation clouds originate from the previous blade while milling the ice block and collapse once arriving on the pressure side of the next blade. In this article the coupled Eulerian-Lagrangian method is used to efficiently compute the impact forces generated by the collapse of the cavitation clouds. The results of the impact forces show that the peak impact forces due to collapse of the ice-induced cavitation clouds are high enough to damage the propeller blade. Thus the presented results do not prevent a possibility that the measured force peaks would be caused by the collapse of the cavitation clouds. The results of the impact forces can be thereafter also used to develop simplified formulas for the cavitation loading which, on the other hand, can be used for example on the basis of the ice rules.
Original languageEnglish
Title of host publicationProceedings of the 22nd IAHR International Symposium on Ice, ICE 2014
Pages155-162
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
Event22nd IAHR International Symposium on Ice, ICE 2014 - Singapore, China
Duration: 11 Aug 201415 Aug 2014

Conference

Conference22nd IAHR International Symposium on Ice, ICE 2014
Abbreviated titleICE 2014
CountryChina
CitySingapore
Period11/08/1415/08/14

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propeller blades
cavitation flow
ice
propellers
blades
hydrodynamics
interactions

Cite this

Lämsä, V. S., Virtanen, J., Kinnunen, A., & Koskinen, P. (2014). Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method. In Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014 (pp. 155-162)
Lämsä, Ville S. ; Virtanen, Juha ; Kinnunen, Aki ; Koskinen, Pekka. / Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method. Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014. 2014. pp. 155-162
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title = "Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method",
abstract = "Cavitation is a significant cause of wear, noise and loss of efficiency in marine propellers. In this study the impact forces due to cavitation cloud collapse are investigated in context of ice-propeller interaction. Force measurements from the propeller blade indicate that the hydrodynamic non-contact forces are relevant when the loads on the blade are developed during the ice-propeller interaction. According the measurements one could claim that the measured short duration force peaks are due to cavitation cloud collapse. These cavitation clouds originate from the previous blade while milling the ice block and collapse once arriving on the pressure side of the next blade. In this article the coupled Eulerian-Lagrangian method is used to efficiently compute the impact forces generated by the collapse of the cavitation clouds. The results of the impact forces show that the peak impact forces due to collapse of the ice-induced cavitation clouds are high enough to damage the propeller blade. Thus the presented results do not prevent a possibility that the measured force peaks would be caused by the collapse of the cavitation clouds. The results of the impact forces can be thereafter also used to develop simplified formulas for the cavitation loading which, on the other hand, can be used for example on the basis of the ice rules.",
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Lämsä, VS, Virtanen, J, Kinnunen, A & Koskinen, P 2014, Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method. in Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014. pp. 155-162, 22nd IAHR International Symposium on Ice, ICE 2014, Singapore, China, 11/08/14.

Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method. / Lämsä, Ville S.; Virtanen, Juha; Kinnunen, Aki; Koskinen, Pekka.

Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014. 2014. p. 155-162.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method

AU - Lämsä, Ville S.

AU - Virtanen, Juha

AU - Kinnunen, Aki

AU - Koskinen, Pekka

N1 - Project code: 74858

PY - 2014

Y1 - 2014

N2 - Cavitation is a significant cause of wear, noise and loss of efficiency in marine propellers. In this study the impact forces due to cavitation cloud collapse are investigated in context of ice-propeller interaction. Force measurements from the propeller blade indicate that the hydrodynamic non-contact forces are relevant when the loads on the blade are developed during the ice-propeller interaction. According the measurements one could claim that the measured short duration force peaks are due to cavitation cloud collapse. These cavitation clouds originate from the previous blade while milling the ice block and collapse once arriving on the pressure side of the next blade. In this article the coupled Eulerian-Lagrangian method is used to efficiently compute the impact forces generated by the collapse of the cavitation clouds. The results of the impact forces show that the peak impact forces due to collapse of the ice-induced cavitation clouds are high enough to damage the propeller blade. Thus the presented results do not prevent a possibility that the measured force peaks would be caused by the collapse of the cavitation clouds. The results of the impact forces can be thereafter also used to develop simplified formulas for the cavitation loading which, on the other hand, can be used for example on the basis of the ice rules.

AB - Cavitation is a significant cause of wear, noise and loss of efficiency in marine propellers. In this study the impact forces due to cavitation cloud collapse are investigated in context of ice-propeller interaction. Force measurements from the propeller blade indicate that the hydrodynamic non-contact forces are relevant when the loads on the blade are developed during the ice-propeller interaction. According the measurements one could claim that the measured short duration force peaks are due to cavitation cloud collapse. These cavitation clouds originate from the previous blade while milling the ice block and collapse once arriving on the pressure side of the next blade. In this article the coupled Eulerian-Lagrangian method is used to efficiently compute the impact forces generated by the collapse of the cavitation clouds. The results of the impact forces show that the peak impact forces due to collapse of the ice-induced cavitation clouds are high enough to damage the propeller blade. Thus the presented results do not prevent a possibility that the measured force peaks would be caused by the collapse of the cavitation clouds. The results of the impact forces can be thereafter also used to develop simplified formulas for the cavitation loading which, on the other hand, can be used for example on the basis of the ice rules.

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BT - Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014

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Lämsä VS, Virtanen J, Kinnunen A, Koskinen P. Propeller blade impact forces due to cavitation cloud collapse by using a coupled Eulerian-Lagrangian method. In Proceedings of the 22nd IAHR International Symposium on Ice, ICE 2014. 2014. p. 155-162