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 language | English |
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Title of host publication | Maritime Research Seminar '99 |
Place of Publication | Espoo |
Publisher | VTT Technical Research Centre of Finland |
Pages | 40-53 |
ISBN (Print) | 951-38-5275-X |
Publication status | Published - 2000 |
MoE publication type | A4 Article in a conference publication |
Event | Maritime Research Seminar '99 - Espoo, Finland Duration: 17 Mar 1999 → 17 Mar 1999 |
Publication series
Series | VTT Symposium |
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Number | 199 |
ISSN | 0357-9387 |
Seminar
Seminar | Maritime Research Seminar '99 |
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Country | Finland |
City | Espoo |
Period | 17/03/99 → 17/03/99 |
Keywords
- ships