Tests to determine the hydrodynamic forces acting on a submarine pipeline when it becomes unstable under the influence of severe environmental loads. The study has been carried out in a scaled-down model test programmed comprising approximately 500…
There are many ways to produce pseudo-random computer simulations of random functions correlated in space and/or time. The simulation mathematics may be performed in time and space domains or in the corresponding frequency domains. In either case,…
Describes the sensor systems used to gather subsea boundary layer ocean current behavior. Includes the description of gathering two data sets: offshore California and Washington.
Describes the computer program SPAN which computes the nonlinear transient response of a submarine pipeline, in contact with the ocean floor, to wave and current excitation. The dynamic response of a pipeline to impact loads, such as loads from trawl…
(1) The development of finite element computer program(s) for pipeline dynamic analysis which, coupled with the wave simulation programs developed in Phase I of the Project, will simulate efficiently the…
Analysis to determine the axial and bending forces and stresses induced in laterally deflected pipelines. It was further requested that the study include several commonly used pipe sizes, strengths, and line lengths in addition to a failure criteria…
The state-of-the-art in Pipeline stability design has been changing very rapidly recently. The physics governing on-bottom stability are much better understood now than they were eight years ago. This is due largely because of research and large…
The extension of the PRCI on bottom stability (OBS) software's applicability to shallow water is assessed. Version 3 of the software has a limitation on water depth
Revised Pipeline On-bottom Stability computer program suite. Updated Pipeline On-bottom Stability user guideline. Brief report on indicating possible objectives for further revisions to the analysis tools and user guideline. This report includes…
This document is the Final report of the Milestone 4 of the SPDA-1-3 Industry High Value Objectives project. It presents validation of the CFD models prepared for simulation of wave and current forces on subsea pipelines as well as a summary of the…