SAMCoT - Annual Report 2015

SAMC

• ANNUAL REPORT 2015

• The Polish-Norwegian Research Programme, aiming to

reduce economic and social differences and to promote

bilateral cooperation through popularization and

support of scientific research. A PhD position linked to

SAMCoT`s activities within Work Package 6 was funded

by the project “Vulnerability of the Arctic Coasts to

Climate Changes” (ARCOAST) with excellent results.

• The participation through SAMCoT’s hosting institu-

tion (NTNU) in member-based organizations like

Technoport aims to stimulate knowledge-driven

innovation. SAMCoT PhDs and Postdocs were invited

to follow Innovation workshops at Technoport 2016 to

assist in the process of turning ideas into innovations.

The Hamburg Ship Model Basin (HSVA), one of SAMCoT’s

research partners, launched the associated project

Ice-Induced Vibrations of Offshore Structures (IVOS)

in 2015. This project will run for a 36 month period and

includes the participation of, and additional funding from,

the following SAMCoT Industry Partners: DNV GL, ENGIE,

Kvæerner, Multiconsult, Shell and TOTAL.

Ice-induced vibrations have been the subject of extensive

research for many decades. Different theories have been

developed by researchers to explain the occurrence of the

lock-in phenomenon, which is themost severe type of vibra-

tion. However, current theories about the rise and continu-

ation of lock-in are highly debated. A limited number of full

scale measurements are available which contain records

of lock-in. Current modelling approaches are often devel-

oped based on these limited data sets. Unfortunately none

of the current numerical models is able to reliably predict

the occurrence of lock-in. In addition, full scale measure-

ments often suffer from incomplete measured data on the

ice-structure interaction process.

As a consequence, the solution to the problem of deficient

full scale measurements for the development of numerical

models and understanding of the lock-in phenomenon, are

scale model tests. However, no adequate scaling law has

yet been found for the transfer of model test data into the

full scale regime.

IVOS aims to address these problems by focusing on two

main objectives:

1. Increasing the understanding of the physical mecha-

nisms leading to lock-in by studying the local pressure

distribution at the ice-structure interface and the

synchronization processes

2. Developing applicable scaling methods for dynamic

ice-structure interaction problems and the transition

from ductile to brittle failure, focusing on the correct

scaling of lock-in.

The first phase of model tests was completed in September

2015; lock-in was established successfully for different

structural configurations and in different ice drift veloci-

ties. The data obtained provides an excellent basis for the

theoretical study of the lock-in process.

Three meetings were held in 2015, a project meeting in

Trondheim (May 6th), a kick-off meeting in Hamburg (June

10th) and a follow-up meeting in Trondheim (October 21st).

The project has a specific archive area in the SAMCoT

eRoom to facilitate the exchange of data and to keep all

partners updated on schedule and tasks. In addition, an

FTP server has been set up to share video files.

Field Work

Finally, yet importantly for this summary, we have to

emphasize SAMCoT’s strong focus on acquiring full-scale

data to understand different physical processes linked to

the interaction of ice with fixed and floating structures.

These full-scale data form the basis for the modelling work

carried out in the different research areas.

Different field activities were carried out by Work Package

1 (WP1) researchers, often together with researchers

from other WPs, in the following locations: North-West

Barents Sea and Barents Sea Opening; Greenland Sea and

the Svalbard Archipelago: Svea Bay, Kapp Amsterdam,

Wahlenberg Fjord, Van Mijen Fjord, Paulabreen Glacier,

Advent Fjord and Akselsundet. In addition, WP6 in colla

boration with MSU carried out extensive fieldwork at

Baydaratskaya Bay in the Kara Sea.

In addition to these efforts, SAMCoT’s participation in the

Oden Arctic Technology Research Cruise 2015 (OATRC2015)

provided many of SAMCoT’s PhD candidates and research-

ers with invaluable full-scale data for their research and

the opportunity to adjust their scientific approach and

methodology. This successful research cruise included two

icebreakers from the Swedish Polar Research Secretariat.

It is not often that PhD candidates get the opportunity to

observe two icebreakers co-working on ice management.

Such experience is of an incalculable high value. ExxonMobil

Upstream Research Company funded OATRC2015.