Integració numèrica

Apunts de l'assignatura de Fonaments Matemàtics de l'EPSEVG per la part de Càlcul numèric d'integrals definides (mètode dels trapecis i mètode de Simpson). Es fa ús de Matlab.2022/20232n quadrimestr

Indicadors d'Atenea: què ha canviat durant el període COVID-19?

Postprint (published version

Càlcul numèric de zeros de funcions. Mètodes intervalars

Apunts de l'assignatura de Fonaments Matemàtics de l'EPSEVG per la part de Càlcul numèric de zeros de funcions: Mètodes intervalars (mètode de la bisecció. Es fa ús de Matlab.2022/20232n quadrimestr

Càlcul numèric de zeros de funcions. Mètodes iteratius

Apunts de l'assignatura de Fonaments Matemàtics de l'EPSEVG per la part de Càlcul numèric de zeros de funcions: Mètodes iteratius (mètode de la secant i de Newton-Rapshon). Es fa ús de Matlab.2022/20232n quadrimestr

The engagement of students using the virtual platform tools. A successful case in a required subject of 1st year in mathematics in engineering (UPC)

Fonaments matemàtics is a required 1st year subject in engineering career at the university EPSEVG (Universitat Politècnica de Catalunya) with approximately 270 students enrolled each semestre that traditionally it had a medium pass rate. Over the last 6 years we have introduced gradual changes in the teaching planning of it with the idea of achieving: 1) that students work throughout the course, 2) leveling knowledge and 3) reduce the number of students not presented to any exam. The changes have been implemented and corrected based on our feedback from students (engagement, grades, acceptance and survey assessments). The introduction of the calculator, laptops and tablets in everyday life and the use of the tools of the UPC virtual platform have been key. In this contribution, we present the strategies used and the good results obtained

Model of a moored power cable at obsea platform

Peer Reviewe

Model of a moored power cable at OBSEA platform

New green energy sources deployed at sea in mobile platforms use power cables in order to transport generated energy at sea surface to the bottom. Theses power cables are exposed to the dynamic behaviour of the platform movements due to waves, currents and wind. OBSEA is a seafloor cabled observatory at 20 m depth in front of Vilanova, in Catalan coast. OBSEA captures data in real time like current, waves and wind among others. In this paper, a model of a moored power cable installed at OBSEA is studied. The study is focused on the trajectory, tensions and deformation or curvature of cables about 0.1 m diameter and under real conditions collected from OBSEA sensors. Simulations are done with OrcaFlex 9.3 software (license N1594). This software allows to model underwater structures and cables.Postprint (published version

Simulations of a moored power cable at OBSEA platform

New green energy sources deployed at sea in mobile platforms use power cables in order to transport green energy at sea surface to the bottom. Theses power cables are exposed to the dynamic behaviour of the platform movements due to waves, currents and wind. OBSEA is a seafloor cabled observatory at 20 m depth in front of Vilanova, in Catalan coast. OBSEA captures data in real time like current, waves and wind among others. In this paper, a model of a moored power cable installed at OBSEA is studied. The study is focused on the trajectory, tensions and deformation or curvature of cables about 0.1 m diameter and under real conditions collected from OBSEA sensors. Simulations are done with OrcaFlex 9.3 software (license N1594). This software allows to model underwater structures and cables.Postprint (published version

Preliminary study of moored power cables

New green energy sources deployed at sea in mobile platforms use power cables in order to transport generated energy at sea surface to the bottom. Theses power cables are exposed to the dynamic behaviour of the platform movements due to waves, currents and wind. Preliminary simulations of the static and dynamic behaviour of a power cable moored at small depth are done. The study is focused on a static study of cables about 0.1 m diameter in a catenary mooring under different seabed conditions, bending stiffness and cable length. A preliminary dynamic study is also done: the trajectory, tensions and deformation or curvature of such a power cable under a specific periodic wave conditions characteristics of catalan coast, in Mediterraneum, are shown. The static study gives useful information to be used when a dynamic mooring is build. The simulations are done under OrcaFlex software (license N1594).Peer ReviewedPostprint (published version

A simplified model for bottom trawl fishing gears

Computational modeling is a valuable complementary tool to assess behavior of bottom trawl fishing gears. A simplified model of the gear that mainly affects to the net is proposed. The model is constrained to steady towing conditions, flat seabed and gear symmetry. Simulations proportionate a number of relevant outcomes like distribution of tensions at the warp, balance of forces at the otterboards or spread under different haul conditions such as depth or towing speed. In this paper we mainly focuss on the description and implementation of the model. Nevertheless, some preliminar comparison with experimental data is also shown