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An experimental procedure for the prediction of the dynamic behaviour of riser type systems

Chryssostomos Chryssostomidis, Nicholas Patrikalakis
MITSG 85-14J

Some of the most sophisticated riser design methodologies available today utilize information from rigid cylinder experiments. There is some question as to their validity, because they ignore the fluid/structure interaction and force correlation along the length of the cylinder. In an attempt to understand the importance of the fluid/structure interaction and the force correlation along the cylinder's length, we performed an experiment that uses a flexible, geometrically simple riser model. The non-dimensional parameters were selected to determine whether the hydroelastic coupling in riser type systems is strong enough to alter the character of the surrounding flow and give rise to a dynamic behavior significantly different from the one predicted using rigid cylinder results in a stripwise manner.

type: Technical reports

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