23rd International Offshore and Polar Engineering Conference, ISOPE-2013
JUN 30-JUL 05, 2013
Anchorage, Alaska, USA
Transverse vortex-induced vibration of piggyback pipelines under the steady current was physically modeled in a water flume with a hydroelastic system. In each test, the reduced velocity was gradually increased from 0 to about 16, which covers the typical range of the reduced velocity for pipelines in the field condition. The effects of configuration parameters, including the spacing between the piggyback and the main pipe (G/D), the position angle of the piggyback to the main pipe (θ) and the mass ratio (m*) on the vibration amplitude and frequency are investigated. The critical reduced velocity for onset of VIV is also examined.
Zang ZP,Gao FP,Mou YC,et al. Transverse VIV response of piggyback pipelines with various configurations in ocean current[C]Proceedings of the 23rd International Offshore and Polar Engineering Conference,2013:448-453.