Evaluation of the Propeller Hull Vortex using a RANS solver

Jussi Martio, Tuomas Sipilä, Antonio Sanchez Caja, Ilkka Saisto, Timo Siikonen

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

Abstract

The appearance of the propeller hull vortex (PHV) has been investigated using the FINFLO RANS solver. This specific phenomenon occurs when solid surfaces placed in the neighbourhood of the propeller prevent the natural flow contraction resulting from the local flow acceleration. As the propeller blades near the solid surfaces may not obtain enough mass flow from the inlet - i.e., the propeller is starved of water - the flow may reverse locally so that water is sucked from the outlet. The small tip clearance combined with the low advance number as well as the geometry of the solid surfaces may affect the inception of the PHV. Time-dependent computations were carried out at seven advance numbers. During the analysis of the results, several quantities were examined to detect the inception of the PHV. Streamlines were found to be the best technique to trace the vortices from an extremely complex flow field. The flow patterns on the flat plate were compared to published experimental observations using the limiting streamlines along the plate. Flow patterns similar to those discovered in the experiments were also obtained by RANS simulations, so the RANS method is able to predict the occurrence of the PHV at least on a qualitative level
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationSecond International Symposium on Marine Propulsors, smp’11
Place of PublicationHamburg
Pages278-283
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
Event2nd International Symposium on Marine Propulsors, SMP'11 - Hamburg, Germany
Duration: 15 Jun 201117 Jun 2011

Conference

Conference2nd International Symposium on Marine Propulsors, SMP'11
Abbreviated titleSMP 2011
CountryGermany
CityHamburg
Period15/06/1117/06/11

Fingerprint

Propellers
Vortex flow
Flow patterns
Water
Flow fields
Geometry
Experiments

Keywords

  • URANS
  • propeller hull vortex

Cite this

Martio, J., Sipilä, T., Sanchez Caja, A., Saisto, I., & Siikonen, T. (2011). Evaluation of the Propeller Hull Vortex using a RANS solver. In Proceedings: Second International Symposium on Marine Propulsors, smp’11 (pp. 278-283). Hamburg.
Martio, Jussi ; Sipilä, Tuomas ; Sanchez Caja, Antonio ; Saisto, Ilkka ; Siikonen, Timo. / Evaluation of the Propeller Hull Vortex using a RANS solver. Proceedings: Second International Symposium on Marine Propulsors, smp’11. Hamburg, 2011. pp. 278-283
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abstract = "The appearance of the propeller hull vortex (PHV) has been investigated using the FINFLO RANS solver. This specific phenomenon occurs when solid surfaces placed in the neighbourhood of the propeller prevent the natural flow contraction resulting from the local flow acceleration. As the propeller blades near the solid surfaces may not obtain enough mass flow from the inlet - i.e., the propeller is starved of water - the flow may reverse locally so that water is sucked from the outlet. The small tip clearance combined with the low advance number as well as the geometry of the solid surfaces may affect the inception of the PHV. Time-dependent computations were carried out at seven advance numbers. During the analysis of the results, several quantities were examined to detect the inception of the PHV. Streamlines were found to be the best technique to trace the vortices from an extremely complex flow field. The flow patterns on the flat plate were compared to published experimental observations using the limiting streamlines along the plate. Flow patterns similar to those discovered in the experiments were also obtained by RANS simulations, so the RANS method is able to predict the occurrence of the PHV at least on a qualitative level",
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Martio, J, Sipilä, T, Sanchez Caja, A, Saisto, I & Siikonen, T 2011, Evaluation of the Propeller Hull Vortex using a RANS solver. in Proceedings: Second International Symposium on Marine Propulsors, smp’11. Hamburg, pp. 278-283, 2nd International Symposium on Marine Propulsors, SMP'11, Hamburg, Germany, 15/06/11.

Evaluation of the Propeller Hull Vortex using a RANS solver. / Martio, Jussi; Sipilä, Tuomas; Sanchez Caja, Antonio; Saisto, Ilkka; Siikonen, Timo.

Proceedings: Second International Symposium on Marine Propulsors, smp’11. Hamburg, 2011. p. 278-283.

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

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AU - Siikonen, Timo

N1 - Project code: 18763/VIRKOOT

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N2 - The appearance of the propeller hull vortex (PHV) has been investigated using the FINFLO RANS solver. This specific phenomenon occurs when solid surfaces placed in the neighbourhood of the propeller prevent the natural flow contraction resulting from the local flow acceleration. As the propeller blades near the solid surfaces may not obtain enough mass flow from the inlet - i.e., the propeller is starved of water - the flow may reverse locally so that water is sucked from the outlet. The small tip clearance combined with the low advance number as well as the geometry of the solid surfaces may affect the inception of the PHV. Time-dependent computations were carried out at seven advance numbers. During the analysis of the results, several quantities were examined to detect the inception of the PHV. Streamlines were found to be the best technique to trace the vortices from an extremely complex flow field. The flow patterns on the flat plate were compared to published experimental observations using the limiting streamlines along the plate. Flow patterns similar to those discovered in the experiments were also obtained by RANS simulations, so the RANS method is able to predict the occurrence of the PHV at least on a qualitative level

AB - The appearance of the propeller hull vortex (PHV) has been investigated using the FINFLO RANS solver. This specific phenomenon occurs when solid surfaces placed in the neighbourhood of the propeller prevent the natural flow contraction resulting from the local flow acceleration. As the propeller blades near the solid surfaces may not obtain enough mass flow from the inlet - i.e., the propeller is starved of water - the flow may reverse locally so that water is sucked from the outlet. The small tip clearance combined with the low advance number as well as the geometry of the solid surfaces may affect the inception of the PHV. Time-dependent computations were carried out at seven advance numbers. During the analysis of the results, several quantities were examined to detect the inception of the PHV. Streamlines were found to be the best technique to trace the vortices from an extremely complex flow field. The flow patterns on the flat plate were compared to published experimental observations using the limiting streamlines along the plate. Flow patterns similar to those discovered in the experiments were also obtained by RANS simulations, so the RANS method is able to predict the occurrence of the PHV at least on a qualitative level

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Martio J, Sipilä T, Sanchez Caja A, Saisto I, Siikonen T. Evaluation of the Propeller Hull Vortex using a RANS solver. In Proceedings: Second International Symposium on Marine Propulsors, smp’11. Hamburg. 2011. p. 278-283