Eirini Katsidoniotaki ECR-TG - 6th PRIMaRE Conference
I would like to thank PRIMARE for the Early Career Researcher – Travel Grant (ECR-TG) funding, giving me the opportunity to travel to attend the 6th PRIMaRE conference in Cardiff from 3rd to 4th of July 2019. Uppsala University is an associated partner of PRIMaRE consortium and my research topic about “Survivability and Risk Assessment of Offshore Renewable Energy Systems” is closely related to the technical research priorities of PRIMaRE. My presentation entitled “Extreme Load Analysis of Point absorbing Wave Energy Converters (WEC)” was accepted by the PRIMARE committee and I had the chance to make an oral presentation on the first day of the conference.
The main part of my PhD project is related with the numerical model simulations using high fidelity CFD analysis, specifically the open- source software OpenFOAM. The main focus is to investigate the nonlinear wave and floating object interaction, during extreme and survival sea states, and predict the extreme response of the body using an ‘equivalent design wave’ approach. The equivalent wave profile represents the wave which causes the maximum design load and thus the maxima device response. At present, the WEC developed by Uppsala University has been approximated as a single-body, point-absorber device. The structure is exposed to 5 regular wave profiles equivalent to 5 sea states identified from the 100-year extreme wave contour at the Humboldt Bay site California. The force due to the connection line, translator acceleration and Power Take-Off (PTO) damping is applied via an expression-based motion restraint. Mesh independence is demonstrated and both the mooring load and body displacement reported. In terms of a long term approach under the framework of the present PhD project, effort is made to correlate real sea state data from the examined locations with the occurrence of nonlinear hydrodynamic phenomena and answer some common practical questions, such as: how resilient is the system; would be a better practice to force the system into survival mode, during the extreme conditions, and; how is the cost of energy affected by the extreme weather conditions present?
The goal of 6th PRIMaRE conference attendance was the presentation of the research work of my PhD project. Since I am at the first year of my research, it has been more than beneficial the feedback and comments I received by the other conference participants. The attendance to the conference has introduced my research work to other partners and associated partners of PRIMaRE gathering my project among the network’s research topics. Moreover, by attending the 6th PRIMaRE conference I have been informed about other research projects related to marine renewables and how other researches approach similar topics as in my case.