Abstract
The present paper was aimed at presenting the time-averaged velocity and turbulence intensity at the
initial plane from a ship’s propeller. The flow characteristics of a ship’s propeller jet are of particular
interest for the researchers investigating the jet induced seabed damage as documented in the previous
studies. Laser Doppler Anemometry (LDA) measurements show that the axial component of velocity is
the main contributor to the velocity magnitude at the initial plane of a ship’s propeller jet. The
tangential component contributes to the rotation while the radial component which contributes to the
diffusion, are the second and third largest contributors to the velocity magnitude. The maximum
tangential and radial velocity components at the initial plane are approximately 82% and 14% of the
maximum axial velocity component, respectively. The axial velocity distribution at the initial plane
shows two peaked ridges with a low velocity core at the rotation axis. The turbulence intensity
distribution shows a three-peaked profile at the initial plane.
Original language | English |
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Pages (from-to) | 1380-1388 |
Number of pages | 9 |
Journal | Ocean Engineering |
Volume | 37 |
Issue number | 14-15 |
DOIs | |
Publication status | Published - Oct 2010 |
ASJC Scopus subject areas
- Ocean Engineering
- Environmental Engineering