The effect of extreme trim operation on propeller cavitation in self-propulsion conditions

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Experimental and numerical studies have shown that operating an LNG Carrier in extreme bow-up trim conditions can lead to substantial savings of over 25% in nominal ship resistance. The present study applies the Extreme Trim Concept to RANSE self-propulsion simulations including the prediction of propeller cavitation. It was investigated how the transient cavitation location and volume changed with varying ship displacements and trim angles over a range of ship speeds. Further, the effect of extreme trim and cavitation development on the ship delivered power was analysed. Results have shown that by operating an LNG Carrier in extreme trim, power consumption and the extent of cavitation were reduced considerably. This study proved that the Extreme Trim Concept can be a valuable operating approach for reducing the environmental impact of LNG Carriers.
LanguageEnglish
Title of host publicationA. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences
Subtitle of host publicationExperimental and Computational Methods for Predictions
EditorsDevrim B. Danışman, Burcu Erbaş, Çağatay Sabri Köksal
Place of PublicationIstanbul
Pages119-128
Number of pages10
Publication statusPublished - 16 Nov 2018
EventA. Yücel Odabaşı Colloquium Series
3rd International Meeting on Progress in Propeller Cavitation
And its Consequences: Experimental and Computational Methods for Predictions
- İstanbul, Turkey
Duration: 15 Nov 201816 Nov 2018

Conference

ConferenceA. Yücel Odabaşı Colloquium Series
3rd International Meeting on Progress in Propeller Cavitation
And its Consequences: Experimental and Computational Methods for Predictions
CountryTurkey
Cityİstanbul
Period15/11/1816/11/18

Fingerprint

Propellers
Cavitation
Propulsion
Liquefied natural gas
Ships
Drag
Environmental impact
Electric power utilization

Keywords

  • extreme trim concept
  • LNG carrier
  • self-propulsion simulation
  • cavitation prediction

Cite this

Maasch, M., Turan, O., & Day, A. (2018). The effect of extreme trim operation on propeller cavitation in self-propulsion conditions. In D. B. Danışman, B. Erbaş, & Ç. S. Köksal (Eds.), A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions (pp. 119-128). Istanbul.
Maasch, Matthias ; Turan, Osman ; Day, Alexander. / The effect of extreme trim operation on propeller cavitation in self-propulsion conditions. A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions . editor / Devrim B. Danışman ; Burcu Erbaş ; Çağatay Sabri Köksal. Istanbul, 2018. pp. 119-128
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abstract = "Experimental and numerical studies have shown that operating an LNG Carrier in extreme bow-up trim conditions can lead to substantial savings of over 25{\%} in nominal ship resistance. The present study applies the Extreme Trim Concept to RANSE self-propulsion simulations including the prediction of propeller cavitation. It was investigated how the transient cavitation location and volume changed with varying ship displacements and trim angles over a range of ship speeds. Further, the effect of extreme trim and cavitation development on the ship delivered power was analysed. Results have shown that by operating an LNG Carrier in extreme trim, power consumption and the extent of cavitation were reduced considerably. This study proved that the Extreme Trim Concept can be a valuable operating approach for reducing the environmental impact of LNG Carriers.",
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Maasch, M, Turan, O & Day, A 2018, The effect of extreme trim operation on propeller cavitation in self-propulsion conditions. in DB Danışman, B Erbaş & ÇS Köksal (eds), A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions . Istanbul, pp. 119-128, A. Yücel Odabaşı Colloquium Series
3rd International Meeting on Progress in Propeller Cavitation
And its Consequences: Experimental and Computational Methods for Predictions , İstanbul, Turkey, 15/11/18.

The effect of extreme trim operation on propeller cavitation in self-propulsion conditions. / Maasch, Matthias; Turan, Osman; Day, Alexander.

A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions . ed. / Devrim B. Danışman; Burcu Erbaş; Çağatay Sabri Köksal. Istanbul, 2018. p. 119-128.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N2 - Experimental and numerical studies have shown that operating an LNG Carrier in extreme bow-up trim conditions can lead to substantial savings of over 25% in nominal ship resistance. The present study applies the Extreme Trim Concept to RANSE self-propulsion simulations including the prediction of propeller cavitation. It was investigated how the transient cavitation location and volume changed with varying ship displacements and trim angles over a range of ship speeds. Further, the effect of extreme trim and cavitation development on the ship delivered power was analysed. Results have shown that by operating an LNG Carrier in extreme trim, power consumption and the extent of cavitation were reduced considerably. This study proved that the Extreme Trim Concept can be a valuable operating approach for reducing the environmental impact of LNG Carriers.

AB - Experimental and numerical studies have shown that operating an LNG Carrier in extreme bow-up trim conditions can lead to substantial savings of over 25% in nominal ship resistance. The present study applies the Extreme Trim Concept to RANSE self-propulsion simulations including the prediction of propeller cavitation. It was investigated how the transient cavitation location and volume changed with varying ship displacements and trim angles over a range of ship speeds. Further, the effect of extreme trim and cavitation development on the ship delivered power was analysed. Results have shown that by operating an LNG Carrier in extreme trim, power consumption and the extent of cavitation were reduced considerably. This study proved that the Extreme Trim Concept can be a valuable operating approach for reducing the environmental impact of LNG Carriers.

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Maasch M, Turan O, Day A. The effect of extreme trim operation on propeller cavitation in self-propulsion conditions. In Danışman DB, Erbaş B, Köksal ÇS, editors, A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions . Istanbul. 2018. p. 119-128