Propeller wake analysis in nonuniform inflow by LDV phase sampling techniques |
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Authors: | Mario Felli Fabio Di Felice |
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Institution: | (1) INSEAN (Italian Institute for Naval Architecture Studies and Testing), Via di Vallerano 139, 00137 Rome, Italy |
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Abstract: | A laser Doppler velocimetry (LDV) phase sampling technique is developed and adopted for the analysis of the flow upstream
and behind a four-blade, highly skewed installed propeller in the case of a twin-screw ship model in a large circulating water
channel. The technique implemented allows the reconstruction of the 3D flow field as a function of propeller angle in transversal
planes located as close as possible to the blade trailing and leading edges. The main features of the propeller installation
are highlighted, as well as the strong and complex interaction of the propeller with the hull wake, especially in the brackets
region. The high level of detail and accuracy of the data acquired would be a powerful tool for the development and validation
of computational codes applied to this topic. |
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Keywords: | Propeller wake Laser Doppler velocimetry (LDV) Phase sampling Nonuniform inflow |
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