Validation of a steady BEM-FEM coupled simulation with experiments on flexible small scale propellers

Pieter Maljaars, Nicola Grasso, Mirek Kaminski, Wim Lafeber

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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This paper presents numerical and experimental results for the validation of a coupled Boundary Element Method (BEM)-Finite Element Method (FEM) simulation for uniform flows. In the first part of the paper the numerical models and the BEM-FEM coupling are presented. A large part of the paper is dedicated to the validation procedure which has been successfully applied to three small scale flexible propellers. Special attention has been paid to improve the accuracy of blade deformation measurements in a cavitation tunnel test setup. Results of tests on a flat plate show that accurate deformation measurements can be performed with a stereo camera system in combination with a Digital Image Correlation (DIC) technique. In the last part of the paper blade deformations calculated with the BEM-FEM coupling are compared to experimental results. Depending on the flow condition a good agreement between measured and calculated blade deformations was obtained.
Original languageEnglish
Title of host publicationProceedings of the 5th International Symposium on Marine Propulsion (SMP 2017)
EditorsAntonio Sánchez-Caja
PublisherVTT Technical Research Centre of Finland
ISBN (Print)978-951-38-8606-6
Publication statusPublished - 2017
EventSMP '17: 5th International Symposium on Marine Propulsors - Espoo, Finland
Duration: 12 Jun 201715 Jun 2017


ConferenceSMP '17: 5th International Symposium on Marine Propulsors


  • BEM-FEM coupling
  • Propeller deformation measurements
  • Digital Image Correlation
  • Hydroelasticity
  • Composite propellers


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