Since the mid-seventies, DHI has continuously been developing refined and reliable models to describe the hydrodynamics, morphological processes and structural responses of subsea structures and marine pipelines. DHI has conducted more than 6,000 model tests with the aim of assessing hydrodynamic forces on pipelines, vortex shedding and pipeline vibrations.

In collaboration with the offshore industry, DHI has also developed guidelines and software tools for the design of subsea structures and pipelines.

Both static and dynamic models for on-bottom stability analysis and numerical models for the analysis of vibrating free spanning pipeline section have been developed by DHI.  The interaction between the pipeline, the surrounding water and the seabed soils, leading to either the development of free pans or self-lowering of the pipeline are modelled by DHI’s numerical dynamic pipeline-seabed interaction software tool.