Experimental investigation on axial velocity distribution for ship’s twin-propeller jets

Wan Tian Yew, Roslan Hashim, Khai Ching Ng

Research output: Contribution to journalArticle

1 Citation (Scopus)


The investigation of twin-propeller jets as ships undergo acceleration is essential. This form of jet has been triggering problematic consequences such as seabed scouring. In order to prevent such scouring, near-bed velocities must first be analyzed in order to design the necessary protection when the under keel clearance of a ship is low when it is near port structures. This paper presents experimental work performed by Laser Doppler Anemometry. It is noticed that research into twin-propeller jet profiles still remains limited in the literature. Therefore, we intend to analyze twin-propeller axial velocity profiles and look into several flow characteristics such as efflux velocity and its decay pattern. Also, the measured velocity profile is compared to that of a single-propeller jet. Current results show that scouring is more severe in the case of the twin-propeller jets.

Original languageEnglish
Pages (from-to)191-199
Number of pages9
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A
Issue number3
Publication statusPublished - 03 Apr 2017

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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