Finflo rans solver validation calculation for propeller open water flow and ship hull flow

Jaakko Pylkkänen, Antonio Sanchez-Caja, Tom Sundell, Heikki Piippo

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

Abstract

This paper gives outline of the work at VTT in applying the FINFLO code to the hydrodynamic analysis of marine screw propellers and ship hull flow. In Section 2 the numerical method is briefly described. Section 3 presents propeller open water flow predictions for three marine screw propellers. In Section 4 the results of double model and free surface viscous flow calculations are compared with measurements. Predicted propeller open water thrust and torque for a propeller of simple geometry are within 1.5 percent of the experimental values for advance numbers close to the design value. For off-design operation points and for propellers with unconventional features, the differences in thrust and torque are higher. The hull flow computations predict the limiting streamlines in the stern region and flow separation satisfactorily. Some details of the wake field are not reproduced well. The computed total resistance coefficient and wave profiles for the Wigley hull model agree well with the experimentally coefficient is under-pridicated and the calculated wave profiles show stronger dissipation than the measured wave profiles.
Original languageEnglish
Title of host publicationMaritime Research Seminar '99
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages40-53
ISBN (Print)951-38-5275-X
Publication statusPublished - 2000
MoE publication typeA4 Article in a conference publication
EventMaritime Research Seminar '99 - Espoo, Finland
Duration: 17 Mar 199917 Mar 1999

Publication series

NameVTT Symposium
PublisherVTT
Number199
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

Seminar

SeminarMaritime Research Seminar '99
CountryFinland
CityEspoo
Period17/03/9917/03/99

Fingerprint

Propellers
Ships
Water
Torque
Flow separation
Viscous flow
Numerical methods
Hydrodynamics
Geometry

Keywords

  • ships

Cite this

Pylkkänen, J., Sanchez-Caja, A., Sundell, T., & Piippo, H. (2000). Finflo rans solver validation calculation for propeller open water flow and ship hull flow. In Maritime Research Seminar '99 (pp. 40-53). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 199
Pylkkänen, Jaakko ; Sanchez-Caja, Antonio ; Sundell, Tom ; Piippo, Heikki. / Finflo rans solver validation calculation for propeller open water flow and ship hull flow. Maritime Research Seminar '99. Espoo : VTT Technical Research Centre of Finland, 2000. pp. 40-53 (VTT Symposium; No. 199).
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Pylkkänen, J, Sanchez-Caja, A, Sundell, T & Piippo, H 2000, Finflo rans solver validation calculation for propeller open water flow and ship hull flow. in Maritime Research Seminar '99. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 199, pp. 40-53, Maritime Research Seminar '99, Espoo, Finland, 17/03/99.

Finflo rans solver validation calculation for propeller open water flow and ship hull flow. / Pylkkänen, Jaakko; Sanchez-Caja, Antonio; Sundell, Tom; Piippo, Heikki.

Maritime Research Seminar '99. Espoo : VTT Technical Research Centre of Finland, 2000. p. 40-53 (VTT Symposium; No. 199).

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

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T1 - Finflo rans solver validation calculation for propeller open water flow and ship hull flow

AU - Pylkkänen, Jaakko

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N2 - This paper gives outline of the work at VTT in applying the FINFLO code to the hydrodynamic analysis of marine screw propellers and ship hull flow. In Section 2 the numerical method is briefly described. Section 3 presents propeller open water flow predictions for three marine screw propellers. In Section 4 the results of double model and free surface viscous flow calculations are compared with measurements. Predicted propeller open water thrust and torque for a propeller of simple geometry are within 1.5 percent of the experimental values for advance numbers close to the design value. For off-design operation points and for propellers with unconventional features, the differences in thrust and torque are higher. The hull flow computations predict the limiting streamlines in the stern region and flow separation satisfactorily. Some details of the wake field are not reproduced well. The computed total resistance coefficient and wave profiles for the Wigley hull model agree well with the experimentally coefficient is under-pridicated and the calculated wave profiles show stronger dissipation than the measured wave profiles.

AB - This paper gives outline of the work at VTT in applying the FINFLO code to the hydrodynamic analysis of marine screw propellers and ship hull flow. In Section 2 the numerical method is briefly described. Section 3 presents propeller open water flow predictions for three marine screw propellers. In Section 4 the results of double model and free surface viscous flow calculations are compared with measurements. Predicted propeller open water thrust and torque for a propeller of simple geometry are within 1.5 percent of the experimental values for advance numbers close to the design value. For off-design operation points and for propellers with unconventional features, the differences in thrust and torque are higher. The hull flow computations predict the limiting streamlines in the stern region and flow separation satisfactorily. Some details of the wake field are not reproduced well. The computed total resistance coefficient and wave profiles for the Wigley hull model agree well with the experimentally coefficient is under-pridicated and the calculated wave profiles show stronger dissipation than the measured wave profiles.

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Pylkkänen J, Sanchez-Caja A, Sundell T, Piippo H. Finflo rans solver validation calculation for propeller open water flow and ship hull flow. In Maritime Research Seminar '99. Espoo: VTT Technical Research Centre of Finland. 2000. p. 40-53. (VTT Symposium; No. 199).