Hydrodynamic performance evaluation of an ice class podded propeller under ice interaction

• Main Authors: Liu, P., Akinturk, A., He, M., Islam, M., Veitch, B.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2008
• Subjects: Breaker; Arctic; Ice Sheet
• Online Access: https://nrc-publications.canada.ca/eng/view/ft/?id=71b86a7f-f2b5-4da7-9c54-3caa48fcf4a2; https://nrc-publications.canada.ca/eng/view/object/?id=71b86a7f-f2b5-4da7-9c54-3caa48fcf4a2; https://nrc-publications.canada.ca/fra/voir/objet/?id=71b86a7f-f2b5-4da7-9c54-3caa48fcf4a2

Fluid-structure interaction between an ice sheet on the water surface and a podded R-Class propeller was examined and analyzed in terms of numerical simulation using a newly enhanced unsteady timedomain, multiple body panel method model. The numerical model was validated and verified and also checked against various previous in-house experimental measurements. The simulation was performed in a real unsteady case, that is, the ice piece stands still and the podded propeller moves and approaches the ice piece until collision occurs. Experimental data were taken from a previous cavitation tunnel test program for a bare R-Class ice breaker propeller under open water conditions, for the R-Class propeller approaching a bladeleading-edge contoured large size ice block under the proximity condition, and from an ice tank test program for a tractor type podded/strutted R-Class propeller under open water conditions. Comparison between experimental and numerical results was made. A general agreement was obtained. The magnitude of force fluctuations during the interaction increased significantly at the instant immediately before the impact between the propeller blades and the ice piece. Peer reviewed: Yes NRC publication: Yes