Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers

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

Abstract

In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.
We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.
The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.
Original languageEnglish
Title of host publicationProceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy
Place of PublicationRome, Italy
PublisherNational Research Council of Italy, Institute of Marine Engineering (CNR-INM)
Number of pages15
ISBN (Electronic)978-88-7617-049-2
Publication statusPublished - 31 May 2019
MoE publication typeA4 Article in a conference publication
Event6th International Symposium on Marine Propulsors, SMP'19 - Rome, Italy
Duration: 26 May 201931 May 2019

Publication series

SeriesInternational Symposiums on Marine Propulsors

Conference

Conference6th International Symposium on Marine Propulsors, SMP'19
CountryItaly
CityRome
Period26/05/1931/05/19

Fingerprint

propellers
viscous flow
Reynolds number
cavitation flow
scale models
simulation
two phase flow
single-phase flow
flow characteristics
turbulence models
blades
wakes
tendencies
dissipation
turbulence
grids
vortices
sensitivity

Keywords

  • Cavitation
  • CFD
  • Turbulence modelling
  • Scale effects

Cite this

Viitanen, V., Siikonen, T., & Sanchez Caja, A. (2019). Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. In Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy [WA2.1] Rome, Italy: National Research Council of Italy, Institute of Marine Engineering (CNR-INM). International Symposiums on Marine Propulsors
Viitanen, Ville ; Siikonen, Timo ; Sanchez Caja, Antonio. / Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy : National Research Council of Italy, Institute of Marine Engineering (CNR-INM), 2019. (International Symposiums on Marine Propulsors).
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title = "Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers",
abstract = "In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.",
keywords = "Cavitation, CFD, Turbulence modelling, Scale effects",
author = "Ville Viitanen and Timo Siikonen and {Sanchez Caja}, Antonio",
year = "2019",
month = "5",
day = "31",
language = "English",
series = "International Symposiums on Marine Propulsors",
booktitle = "Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy",
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Viitanen, V, Siikonen, T & Sanchez Caja, A 2019, Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. in Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy., WA2.1, National Research Council of Italy, Institute of Marine Engineering (CNR-INM), Rome, Italy, International Symposiums on Marine Propulsors, 6th International Symposium on Marine Propulsors, SMP'19, Rome, Italy, 26/05/19.

Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. / Viitanen, Ville; Siikonen, Timo; Sanchez Caja, Antonio.

Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy : National Research Council of Italy, Institute of Marine Engineering (CNR-INM), 2019. WA2.1 (International Symposiums on Marine Propulsors).

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

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T1 - Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers

AU - Viitanen, Ville

AU - Siikonen, Timo

AU - Sanchez Caja, Antonio

PY - 2019/5/31

Y1 - 2019/5/31

N2 - In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.

AB - In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.

KW - Cavitation

KW - CFD

KW - Turbulence modelling

KW - Scale effects

M3 - Conference article in proceedings

T3 - International Symposiums on Marine Propulsors

BT - Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy

PB - National Research Council of Italy, Institute of Marine Engineering (CNR-INM)

CY - Rome, Italy

ER -

Viitanen V, Siikonen T, Sanchez Caja A. Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. In Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy: National Research Council of Italy, Institute of Marine Engineering (CNR-INM). 2019. WA2.1. (International Symposiums on Marine Propulsors).