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Protei meets Det Norske Veritas (DNV) in Oslo

posted Apr 1, 2011, 7:37 AM by Etienne Gernez   [ updated Apr 1, 2011, 7:51 AM ]

DNV (Det Norske Veritas) is an independent foundation with the purpose of safeguarding life, property, and the environment. DNV is a leading international provider of services for managing risk: to assess, evaluate and manage the risks involved in numerous high-profile projects around the world. DNV established approximately 300 offices in 100 countries. As a knowledge-based company, DNV prime assets are the creativity, knowledge, and expertise of its 9,000 employees from more than 85 different nations. See more on DNV website.


Etienne Gernez and Cesar Harada had several meetings at DNV on thursday 31st of March. Below are the minutes of the meetings.


#################### Hydrodynamics  meeting############################# 

Tormod Landet - DNV NTANO362 Ships Hydrodynamics

Håvard Austefjord - DNV NTANO362 Ships Hydrodynamics


How to simulate the behaviour of Protei (sailing robot+ sorbent boom) in waves?

Ship design tools cannot simulate an articulated hull. Different basic shapes (straight shape, J shape, S shape) can be modeled, moving forward in a straight line. Protei is believed to behave well in very long waves due to its small length (6m or so).  

Resistance in water

Experimental testing is advised due to unknowns on the roughness of the sorbent boom and the flow along the flexible, inflatable hull. To measure the drag of the sorbent boom, Tormod recommends to pull the boom with a motor boat and measure the force through a dynamometer. Different speeds, boom lengths and pulling directions can be tested. The resistance of the sailing robot itself is assumed to be only a small part of the drag of the boom.

Propulsion

The sails are propulsing the robot. Håvard reckons they should be modeled as a lifting surface like a foil -similar to a plane wing/propeller blade. Panel model and vortex lattice methods can be used for that as a start. More advanced fluid-structure interaction (FSI) tools could be used latter on. Etienne has an academic contact in France who could advise (Jean-François Sigrist, Phd Ecole Centrale Nantes, DCNs). This would be a great opportunity to develop new competences. 

--> Actions

*Plan the sorbent boom drag measurement in order to dimension the sails. Ideally, a student with access to a towing tank. [Etienne, Cesar]

*Contact Jean-François Sigrist for advice on FSI tools. [Etienne]


######################### Special ships ################################

Arnstein Eknes - Head of Special Ships 

Atle Ellefsen - Naval Architect  


Quick brainstorming: positive and negative aspects of Protei

Positive points:

-open source business model

-visionary project, created for the future

-deep and sincere intentions motivating the project development

-alignment with DNV values: developing competence, caring for each other, social responsibility

-potential technical assistance from Seismic vessels (also under the "Special Ships" division of Arnstein) on pulling a heavy, flexible boom

Negative points:

-possible misuse of the technology, due to its open accessibility

-safety issues: collision, boom entanglement

-communication: large bandwith needed to transmit all the info needed to remotely control Protei

DNV and Protei

Arnstein is very enthusiastic to get DNV on board. 

On the short term: financial support through the Kickstarter funding campaign.

On the long term: technical support to DNV to develop new competences (oil resistant materials for the hull of the sailing robot, simulation tools, internet interface for remote control,+), create internal motivation in DNV through this innovative project, attract creative and competent people to work at DNV.

--> Actions

*Promote Protei internally in DNV. [Etienne, Arnstein] Protei brochures are already circulating. 

*Follow up financial support on Kickstarter [Arnstein]

*Mention DNV as industry partner on Protei website, with a DNV logo [Etienne, Cesar]


######################## Qualification of New Technology####################

Christian Markussen - Head of Subsea

Gunnhild Bækken - Operational Excellence and Energy Efficiency 


Building confidence

QNT as used in DNV helps to achieve a defined set of performances, within known limits, with a certain level of confidence, for a new technology to be brought to the market. Gunnhild presented in details the DNV QNT process.

--> Actions

*Define a Qualification basis for Protei to start the QNT process. [Etienne, Cesar]

*Explore the possibility to use Protei as a QNT pilot project within DNV. [Etienne]


######################### DNV Software ################################

Espen Wøien - Computational Technology & Architecture

Torgeir Wada - Analysis and Hydro Products

Gaute Storhaug - Technical consultancy, collaboration with Vestfold University College on Oil spill spread modeling (recent oil spill in Oslofjord due to the grounding of a small containership)

Gaming and control

Espen advises to contact video games companies to work on the scenario and interface of Protei´s online oil spill collection module

Torgeir highlights that local shifting wind conditions might prevent full control of the sailing robots by online users. Also the collision avoiding system. Overriding of the sailing robot control by the internal Artificial Intelligence is then necessary, but where to draw the line between automatic control and online live control?

--> Actions

*Contact video games companies and gamers communities [Cesar]

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