Hydrodynamic duct of flow management at the bow of a vessel
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United States of America Patent
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Dec 8, 2015
Grant Date -
Jun 5, 2014
app pub date -
Jul 16, 2012
filing date -
Jul 18, 2011
priority date (Note) -
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Abstract
Hydrodynamic duct mounted at the bow of a vessel, comprising a horizontal wall portion (1) and two lateral wall portions (2,3), whereby the flow through the duct acquires substantially different characteristics from the flow outside it and thereby wave making and frictional resistances are reduced and the fuel conventionally required for the propulsion of the vessel is reduced accordingly. The duct is arranged with the Center of Low Pressure (1c) corresponding to a zero angle of attack onto the horizontal wall portion (1) being located in the region of generation of the first bow wave and with the Centers of Low Pressure (2c,3c) of the lateral wall portions (2,3) in the region of connection thereof with the horizontal wall portion (1) being located in a selected position between the Center of Low Pressure (1c) and up to or slightly forwardly the leading edge (1a) of the horizontal wall portion (1).
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