Wake model of hydrodynamic forces on pipelines

Prediction of hydrodynamic forces on submarine pipelines using an improved Wake II Model

A new hydrodynamic force model for the prediction of forces on seabed pipelines has been verified. Comparisons of forces predicted by the new model with those measured in fullscale laboratory and f...

Hydrodynamic Forces on Seabed Pipelines

A mathematical model was developed for predicting the scatter of wave forces on offshore structures (e.g., pilings and pipelines); it was based on an analysis of the effects of distortions in the flow pattern under the wave that are induced by the structure itself during preceding wave cycles in the form of wakes for the case of large amplitude oscillations and velocities of sufficient magnitude to cause turbulent flow and to generate drag forces that are large compared with the inertial forces. The model gave values for the drag forces in good agreement with the experimental data of Keulegan and Carpenter and with experimental data on the drag forces on an oscillating body in a fluid obtained in a Ryon wave tank at Rice University. A graphical solution for arbitrarily reversing flows was obtained.

H Beckman

Papers

Inherent scatter of wave forces on submerged structures