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Hydrodynamic coefficients of a harmonically oscillated tower
AbstractA tower hinged at the bottom was oscillated mechanically in a sinusoidal fashion in a plane in still water. An instrumented section in the tower measured the inline and transverse forces locally on the tower due to the hydrodynamic effects. These forces are analyzed for the added mass, drag and lift coefficients which are presented as functions of Keulegan-Carpenter and Reynolds number. The lift force frequencies are also investigated. The measured overall reactions on the tower are used to verify the values of the local coefficients. The results presented here are not only applicable to articulated towers but to other moving elements of an offshore structure, e.g. risers, tension-legs, etc.
Hydrodynamic coefficients of a harmonically oscillated tower
AbstractA tower hinged at the bottom was oscillated mechanically in a sinusoidal fashion in a plane in still water. An instrumented section in the tower measured the inline and transverse forces locally on the tower due to the hydrodynamic effects. These forces are analyzed for the added mass, drag and lift coefficients which are presented as functions of Keulegan-Carpenter and Reynolds number. The lift force frequencies are also investigated. The measured overall reactions on the tower are used to verify the values of the local coefficients. The results presented here are not only applicable to articulated towers but to other moving elements of an offshore structure, e.g. risers, tension-legs, etc.
Hydrodynamic coefficients of a harmonically oscillated tower
Chakrabarti, Subrata K. (Autor:in) / Cotter, Dennis C. (Autor:in) / Libby, Alan R. (Autor:in)
Applied Ocean Research ; 5 ; 226-233
01.01.1983
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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