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

Matthias Maasch; Osman Turan; Alexander Day

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

Matthias Maasch, Osman Turan, Alexander Day

Naval Architecture, Ocean And Marine Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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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.

Original language	English
Title of host publication	A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences
Subtitle of host publication	Experimental and Computational Methods for Predictions
Editors	Devrim B. Danışman, Burcu Erbaş, Çağatay Sabri Köksal
Place of Publication	Istanbul
Pages	119-128
Number of pages	10
Publication status	Published - 16 Nov 2018
Event	A. 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 2018 → 16 Nov 2018

Conference

Conference	A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences: Experimental and Computational Methods for Predictions
Country/Territory	Turkey
City	İstanbul
Period	15/11/18 → 16/11/18

Keywords

extreme trim concept
LNG carrier
self-propulsion simulation
cavitation prediction

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Maasch-etal-AYOCOL2018-The-effect-of-extreme-trim-operation-on-propeller-cavitationFinal published version, 2.41 MB

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).

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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title = "The effect of extreme trim operation on propeller cavitation in self-propulsion conditions",

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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booktitle = "A. Y{\"u}cel Odaba{\c s}ı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences",

note = "A. Y{\"u}cel Odaba{\c s}ı Colloquium Series<br/>3rd International Meeting on Progress in Propeller Cavitation <br/>And its Consequences: Experimental and Computational Methods for Predictions ; Conference date: 15-11-2018 Through 16-11-2018",

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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 proceeding › Conference contribution book

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AU - Maasch, Matthias

AU - Turan, Osman

AU - Day, Alexander

PY - 2018/11/16

Y1 - 2018/11/16

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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KW - LNG carrier

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KW - cavitation prediction

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BT - A. Yücel Odabaşı Colloquium Series 3rd International Meeting on Progress in Propeller Cavitation And its Consequences

A2 - Danışman, Devrim B.

A2 - Erbaş, Burcu

A2 - Köksal, Çağatay Sabri

CY - Istanbul

T2 - A. Yücel Odabaşı Colloquium Series<br/>3rd International Meeting on Progress in Propeller Cavitation <br/>And its Consequences: Experimental and Computational Methods for Predictions

Y2 - 15 November 2018 through 16 November 2018

ER -

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

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

Abstract

Conference

Keywords

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Shipping in a Changing Climate

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Cite this

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

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Projects

Shipping in a Changing Climate

Equipment

ARCHIE-WeSt (UOSHPC)

Cite this