6 research outputs found
Surrogate-based optimization of tidal turbine arrays: a case study for the Faro-OlhĂŁo inlet
This paper presents a study for estimating the size of a tidal turbine array for the Faro-Olhão Inlet (Potugal) using a surrogate optimization approach. The method compromises problem formulation, hydro-morphodynamic modelling, surrogate construction and validation, and constraint optimization. A total of 26 surrogates were built using linear RBFs as a function of two design variables: number of rows in the array and Tidal Energy Converters (TECs) per row. Surrogates describe array performance and environmental effects associated with hydrodynamic and morphological aspects of the multi inlet lagoon. After validation, surrogate models were used to formulate a constraint optimization model. Results evidence that the largest array size that satisfies performance and environmental constraints is made of 3 rows and 10 TECs per row.Eduardo González-Gorbeña has received funding for the OpTiCA project (http://msca-optica.eu/) from the Marie Skłodowska-Curie Actions of the European Union's H2020-MSCA-IF-EF-RI-2016 / GA#: 748747. The paper is a contribution to the SCORE pro-ject, funded by the Portuguese Foundation for Science and Technology (FCT–PTDC/AAG-TEC/1710/2014). André Pacheco was supported by the Portuguese Foun-dation for Science and Technology under the Portuguese Researchers’ Programme 2014 entitled “Exploring new concepts for extracting energy from tides” (IF/00286/2014/CP1234).info:eu-repo/semantics/publishedVersio
Design and implementation of the AMIGA embedded system for data acquisition
The Auger Muon Infill Ground Array (AMIGA) is part of the AugerPrime upgrade
of the Pierre Auger Observatory. It consists of particle counters buried 2.3 m
underground next to the water-Cherenkov stations that form the 23.5 km
large infilled array. The reduced distance between detectors in this denser
area allows the lowering of the energy threshold for primary cosmic ray
reconstruction down to about 10 eV. At the depth of 2.3 m the
electromagnetic component of cosmic ray showers is almost entirely absorbed so
that the buried scintillators provide an independent and direct measurement of
the air showers muon content. This work describes the design and implementation
of the AMIGA embedded system, which provides centralized control, data
acquisition and environment monitoring to its detectors. The presented system
was firstly tested in the engineering array phase ended in 2017, and lately
selected as the final design to be installed in all new detectors of the
production phase. The system was proven to be robust and reliable and has
worked in a stable manner since its first deployment.Comment: Accepted for publication at JINST. Published version, 34 pages, 15
figures, 4 table