Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow

Antonio Sánchez-Caja; Timo Rauti; Karl Ramstedt; Tuomas Sipilä

Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow

Antonio Sánchez-Caja
, Timo Rauti
, Karl Ramstedt
, Tuomas Sipilä

Rolls-Royce

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

The notion of high efficiency related to a low loaded propeller has been sometimes misunderstood in the context of multi-component tandem or CRP units. Individual low loaded propellers working as a part of a multi-stage propulsion unit do not lead necessarily to high efficiency since high efficiency is more related to what could be called low “propulsive” loading, than to what is usually referred to as low “propeller” loading. In this paper, multi-component propulsors are numerically investigated in straight flow from the standpoint of efficiency and propeller interaction. Potential flow tools are used to illustrate the ability of different multicomponent configurations to improve efficiency. RANS methods coupled to actuator disk models are used first to validate average loads on a CRP unit and then to analyze effective wakes in a podded propulsor with three co-axial propeller components.

Original language	English
Title of host publication	Proceedings of the Fifth International Symposium on Marine Propulsors
Subtitle of host publication	SMP '17
Editors	Antonio Sánchez-Caja
Publisher	VTT Technical Research Centre of Finland
Number of pages	9
ISBN (Print)	978-951-38-8608-0
Publication status	Published - 2017
MoE publication type	A4 Article in a conference publication
Event	5th International Symposium on Marine Propulsors, SMP'17 - Espoo, Finland Duration: 12 Jun 2017 → 15 Jun 2017

Publication series

Series	International Symposiums on Marine Propulsors
Volume	5
ISSN	2414-6129

Conference

Conference	5th International Symposium on Marine Propulsors, SMP'17
Abbreviated title	smp '17
Country/Territory	Finland
City	Espoo
Period	12/06/17 → 15/06/17

Keywords

efficiency
contra rotating propellers (CRP)
multi component propellers
actuator disk
effective wake

Access to Document

http://www.marinepropulsors.com/proceedings/2017/WA3-2.pdf

Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17
Sánchez-Caja, A. (Editor), 2017, VTT Technical Research Centre of Finland. (International Symposiums on Marine Propulsors, Vol. 5).
Research output: Book/Report › Book (editor) › Scientific › peer-review

Open Access

Cite this

Sánchez-Caja, A., Rauti, T., Ramstedt, K., & Sipilä, T. (2017). Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow. In A. Sánchez-Caja (Ed.), Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17 Article WA3-2 VTT Technical Research Centre of Finland. http://www.marinepropulsors.com/proceedings/2017/WA3-2.pdf

Sánchez-Caja, Antonio ; Rauti, Timo ; Ramstedt, Karl et al. / Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow. Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17. editor / Antonio Sánchez-Caja. VTT Technical Research Centre of Finland, 2017. (International Symposiums on Marine Propulsors, Vol. 5).

@inproceedings{bd61de1dd5e84aa780e27b8f7f4f9621,

title = "Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow",

abstract = "The notion of high efficiency related to a low loaded propeller has been sometimes misunderstood in the context of multi-component tandem or CRP units. Individual low loaded propellers working as a part of a multi-stage propulsion unit do not lead necessarily to high efficiency since high efficiency is more related to what could be called low “propulsive” loading, than to what is usually referred to as low “propeller” loading. In this paper, multi-component propulsors are numerically investigated in straight flow from the standpoint of efficiency and propeller interaction. Potential flow tools are used to illustrate the ability of different multicomponent configurations to improve efficiency. RANS methods coupled to actuator disk models are used first to validate average loads on a CRP unit and then to analyze effective wakes in a podded propulsor with three co-axial propeller components. ",

keywords = "efficiency, contra rotating propellers (CRP), multi component propellers, actuator disk, effective wake",

author = "Antonio S{\'a}nchez-Caja and Timo Rauti and Karl Ramstedt and Tuomas Sipil{\"a}",

year = "2017",

language = "English",

isbn = "978-951-38-8608-0",

series = "International Symposiums on Marine Propulsors",

publisher = "VTT Technical Research Centre of Finland",

editor = "Antonio S{\'a}nchez-Caja",

booktitle = "Proceedings of the Fifth International Symposium on Marine Propulsors",

address = "Finland",

note = "5th International Symposium on Marine Propulsors, SMP'17, smp '17 ; Conference date: 12-06-2017 Through 15-06-2017",

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Sánchez-Caja, A, Rauti, T, Ramstedt, K & Sipilä, T 2017, Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow. in A Sánchez-Caja (ed.), Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17., WA3-2, VTT Technical Research Centre of Finland, International Symposiums on Marine Propulsors, vol. 5, 5th International Symposium on Marine Propulsors, SMP'17, Espoo, Finland, 12/06/17. <http://www.marinepropulsors.com/proceedings/2017/WA3-2.pdf>

Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow. / Sánchez-Caja, Antonio; Rauti, Timo; Ramstedt, Karl et al.
Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17. ed. / Antonio Sánchez-Caja. VTT Technical Research Centre of Finland, 2017. WA3-2 (International Symposiums on Marine Propulsors, Vol. 5).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow

AU - Sánchez-Caja, Antonio

AU - Rauti, Timo

AU - Ramstedt, Karl

AU - Sipilä, Tuomas

PY - 2017

Y1 - 2017

N2 - The notion of high efficiency related to a low loaded propeller has been sometimes misunderstood in the context of multi-component tandem or CRP units. Individual low loaded propellers working as a part of a multi-stage propulsion unit do not lead necessarily to high efficiency since high efficiency is more related to what could be called low “propulsive” loading, than to what is usually referred to as low “propeller” loading. In this paper, multi-component propulsors are numerically investigated in straight flow from the standpoint of efficiency and propeller interaction. Potential flow tools are used to illustrate the ability of different multicomponent configurations to improve efficiency. RANS methods coupled to actuator disk models are used first to validate average loads on a CRP unit and then to analyze effective wakes in a podded propulsor with three co-axial propeller components.

AB - The notion of high efficiency related to a low loaded propeller has been sometimes misunderstood in the context of multi-component tandem or CRP units. Individual low loaded propellers working as a part of a multi-stage propulsion unit do not lead necessarily to high efficiency since high efficiency is more related to what could be called low “propulsive” loading, than to what is usually referred to as low “propeller” loading. In this paper, multi-component propulsors are numerically investigated in straight flow from the standpoint of efficiency and propeller interaction. Potential flow tools are used to illustrate the ability of different multicomponent configurations to improve efficiency. RANS methods coupled to actuator disk models are used first to validate average loads on a CRP unit and then to analyze effective wakes in a podded propulsor with three co-axial propeller components.

KW - efficiency

KW - contra rotating propellers (CRP)

KW - multi component propellers

KW - actuator disk

KW - effective wake

M3 - Conference article in proceedings

SN - 978-951-38-8608-0

T3 - International Symposiums on Marine Propulsors

BT - Proceedings of the Fifth International Symposium on Marine Propulsors

A2 - Sánchez-Caja, Antonio

PB - VTT Technical Research Centre of Finland

T2 - 5th International Symposium on Marine Propulsors, SMP'17

Y2 - 12 June 2017 through 15 June 2017

ER -

Numerical Investigation of Multi-Component Podded Propulsor Performance in Straight Flow

Abstract

Publication series

Conference

Keywords

Access to Document

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Research output

Proceedings of the Fifth International Symposium on Marine Propulsors: SMP '17

Cite this