Investigation of the propeller slip stream over an Azipod propulsor by PIV measurements and CFD simulations

Andrei Korsström, Pasi Miettinen, Satu K. Hänninen, Keijo Hanhirova

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


In the following study the possibility to simulate the propeller slip flow over a pod propulsor has been investigated. The slipstream can be investigated either through measurements or by calculations. Since the measurements had to be done in model scale all the comparisons have been done in that scale. For this study a pod unit with a working propeller was experimentally investigated using the particle image velocimetry (PIV) method. This was done at two differentadvance ratios. The same condition was then investigated both with a boundary element method (BEM) and Unsteady Reynolds Averaged Navier-Stokes (URANS) calculations. In the URANS approach both SST (Menter) k-ω and Reynolds stress transport (RST) turbulence models were used. The RST model takes into account the anisotropy of turbulence. From the calculation methods there are clear differences in the approach. The BEM has its unknowns on the surface onlyand computes field quantities as a post-processing step. The URANS on the other hand incorporates calculation cells between the calculation surfaces and the plane of intererest, and hence, takes into account the volume of the fluid.
Original languageEnglish
Title of host publicationProceedings of the Fourth International Symposium on Marine Propulsors - smp15 31 May - 4 June 2015, Austin, Texas, USA
Publishersmp International Symposium on Marine Propulsors
Number of pages11
ISBN (Print)978-0-9964594-4-0
Publication statusPublished - 2015
MoE publication typeB3 Non-refereed article in conference proceedings
Event4th International Symposium on Marine Propulsors, smp 15 - Austin, United States
Duration: 31 May 20154 Jun 2015
Conference number: 4


Conference4th International Symposium on Marine Propulsors, smp 15
Abbreviated titlesmp 15
Country/TerritoryUnited States


  • pod propulsor
  • Particle Image Velocimetry PIV
  • Boundary Element Method BEM
  • Unsteady Reynolds-Averaged Navier-Stokes URANS


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