Abstract
The inflow ahead of a rotating propeller attached to a container ship model was visualized using a two-frame particle image velocimetry (PIV) technique. For illuminating the inflow region, a transparent window was installed at the stern of the ship model. Ensemble-averaged mean velocity fields were measured at four different blade phases under the design loading condition. The characteristics of the inflow in the upper plane above the propeller axis are quite different from those below the propeller axis. In the far upstream region above the propeller axis, most of the inflow comes from the hull wake and the axial velocity is very small. As the inflow moves toward the propeller plane, its axial velocity component increases rapidly. In addition, the variation of the inflow characteristics with respect to phase angle becomes apparent. The thick hull boundary layer and out-of-plane motion resulting from the propeller rotation produce a large turbulent kinetic energy around the tip of the propeller blade in the upper inflow region. The axial velocity distribution of the propeller inflow is asymmetric with respect to the vertical center axis, exhibiting different axial velocities on the port and starboard sides.
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Bu Geun Paik: He received his master degree in Physics in 1995 from POSTECH and worked as a research engineer in Samsung Shipbuilding Company. He received Ph.D. in Mechanical Engineering in 2005 from the same university. He has worked in Marine Transportation Safety Research Division of MOERI(KORDI) as a senior research scientist since 2004. His research interests are ship hydrodynamics and turbulence control using active or passive methods.
Gun Do Kim: He received his master and Ph.D. in Naval Architecture and Ocean Engineering from Chungnam National University in 1999 and 2003, respectively. He has worked in Marine Transportation Safety Research Division of MOERI(KORDI) as a senior research scientist since 2005. His research interests are ship hydrodynamics and propeller cavitation control and analysis.
Jung Yeop Lee: He received his master degree in Mechanical Engineering in 2005 from POSTECH. He is a Ph. D student at POSTECH and his research interests are turbulent flow control using active methods and micro- or bio-fluid.
Sang Joon Lee: He received his master and Ph.D. in Mechanical Engineering from KAIST (Korea Advanced Institute of Science and Technology) in 1982 and 1986, respectively. In 1986 he worked as a senior researcher at KIMM. He is currently a professor in the Department of Mechanical Engineering at POSTECH after joining as an assistant professor in 1987. His research interests are quantitative flow visualization (PIV, PTV, LIF, Holography), experimental fluid mechanics, bluff body aerodynamics, microfluidics and flow control
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Paik, B.G., Kim, G.D., Lee, J.Y. et al. Visualization of the inflow ahead of a rotating propeller attached to a container ship model. J Vis 10, 47–55 (2007). https://doi.org/10.1007/BF03181803
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DOI: https://doi.org/10.1007/BF03181803