Field Measurements of Flow Velocities in Propeller Jets

Irene Cantoni, Arne Van Der Hout*, Erik Jan Houwing, Alfred Roubos, Michel Ruijter

*Corresponding author for this work

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


Propellers of ships generate high velocities adjacent to quay walls, jetties and locks. Generally, a bottom protection is installed in order to prevent instability due to scour. Although design guidance exist, propeller-induced loads are far from fully understood and have predominantly been derived on the basis of model tests. The validation of the existing design methods is lacking, especially for specific types of bow thrusters. In this research, field measurements of flow velocities induced by a 4-channel bow thruster system against a vertical quay wall have been performed. Test results showed a flow characterized by low mean velocities and large fluctuations, with the extent of reflected flow limited to few meters from the quay wall and inflow beneath the suction points playing a role.

Original languageEnglish
Title of host publicationProceedings of PIANC Smart Rivers 2022 - Green Waterways and Sustainable Navigations
EditorsYun Li, Yaan Hu, Philippe Rigo, Francisco Esteban Lefler, Gensheng Zhao
Number of pages19
ISBN (Print)9789811961373
Publication statusPublished - 2023
Externally publishedYes
Event10th PIANC Smart Rivers Conference, Smart Rivers 2022 - Nanjing, China
Duration: 18 Oct 202221 Oct 2022

Publication series

NameLecture Notes in Civil Engineering
Volume264 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565


Conference10th PIANC Smart Rivers Conference, Smart Rivers 2022


  • Bed protection
  • Bow thruster
  • Field measurement
  • Propeller jet
  • Quay wall


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