Abstract
Cavitation is a significant cause of wear, noise and loss
of efficiency in marine propellers. In this study the
impact forces due to cavitation cloud collapse are
investigated in context of ice-propeller interaction.
Force measurements from the propeller blade indicate that
the hydrodynamic non-contact forces are relevant when the
loads on the blade are developed during the ice-propeller
interaction. According the measurements one could claim
that the measured short duration force peaks are due to
cavitation cloud collapse. These cavitation clouds
originate from the previous blade while milling the ice
block and collapse once arriving on the pressure side of
the next blade. In this article the coupled
Eulerian-Lagrangian method is used to efficiently compute
the impact forces generated by the collapse of the
cavitation clouds. The results of the impact forces show
that the peak impact forces due to collapse of the
ice-induced cavitation clouds are high enough to damage
the propeller blade. Thus the presented results do not
prevent a possibility that the measured force peaks would
be caused by the collapse of the cavitation clouds. The
results of the impact forces can be thereafter also used
to develop simplified formulas for the cavitation loading
which, on the other hand, can be used for example on the
basis of the ice rules.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 22nd IAHR International Symposium on Ice (ICE 2014) |
| Pages | 155-162 |
| Publication status | Published - 2014 |
| MoE publication type | A4 Article in a conference publication |
| Event | 22nd IAHR International Symposium on Ice, ICE 2014 - Singapore, China Duration: 11 Aug 2014 → 15 Aug 2014 |
Conference
| Conference | 22nd IAHR International Symposium on Ice, ICE 2014 |
|---|---|
| Abbreviated title | ICE 2014 |
| Country/Territory | China |
| City | Singapore |
| Period | 11/08/14 → 15/08/14 |
