Abstract
VTT Technical Research Centre of Finland and Aalto
University have been investigating numerical simulation
of cavitating propellers. Special emphasis is placed on
the simulation of cavitating tip vortices. The
simulations are performed with the $k-{\epsilon> SST
$k-{\omega> and EARSM turbulence models in wetted and
cavitating conditions. The calculations are performed in
uniform inflow. The propeller performance characteristics
and the wake velocities in the wetted conditions were
compared to the measurements. Additionally, the simulated
cavitation extent on the propeller was compared to the
measurements. Good correlation between the tests and
simulations were found. The turbulence models gave
significant differences to the tip vortex core solutions
in wetted and cavitating conditions. The $k-{\epsilon>
model gave high non-dimensional Reynolds stresses both in
wetted and cavitating conditions. The anisotropic EARSM
model gave the lowest Reynolds stresses in the wetted
conditions in the vortex core. In cavitating conditions
the SST $k-{\omega> and EARSM models gave very low
Reynolds stresses to the vaporous vortex core.
Original language | English |
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Title of host publication | Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI |
Place of Publication | Barcelona, Spain |
Publisher | International Center for Numerical Methods in Engineering (CIMNE) |
Pages | 4741 - 4752 |
ISBN (Print) | 978-84-942844-7-2 |
Publication status | Published - 2014 |
MoE publication type | A4 Article in a conference publication |
Event | 11th World Congress on Computational Mechanics - 5th European Conference on Computational Mechanics - 6th European Conference on Computational Fluid Dynamics, WCCM XI - ECCM V - ECFD VI - Barcelona, Spain Duration: 20 Jul 2014 → 25 Jul 2014 |
Conference
Conference | 11th World Congress on Computational Mechanics - 5th European Conference on Computational Mechanics - 6th European Conference on Computational Fluid Dynamics, WCCM XI - ECCM V - ECFD VI |
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Abbreviated title | WCCM XI - ECCM V - ECFD VI |
Country | Spain |
City | Barcelona |
Period | 20/07/14 → 25/07/14 |
Keywords
- cavitation
- propellers
- tip vortex
- turbulence models
- ships