Exploració per autor "Gironella Cobos, Xavier"
Ara es mostren els items 29-48 de 64
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Manoeuvre analysis and simulation to prevent seabed scour due to ship propellers
Mujal Colilles, Anna; Castells Sanabra, Marcel·la; Gironella Cobos, Xavier; Llull Marroig, Antoni Ignaci (Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria Nàutiques, 2020-09)
Text en actes de congrés
Accés obertErosion of the seabed is produced by cargo and passenger vessels when manoeuvring in a harbour basin due to the high-speed jet flow generated by the main propellers. In case of twin propeller vessels, the ability to perform ... -
Mapas de olas y vientos sobre la mar
González Marco, Daniel; Sospedra Iglesias, Joaquim; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín (Ed. Cabildo de Lanzarote, 2012)
Capítol de llibre
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Measuring wave impact induced pressures with a pressure mapping system
Stagonas, Dimitris; Marzeddu, Andrea; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín; Muller, Gerald (2016-06)
Article
Accés obertThe use of a pressuremapping system formeasuring wave impact induced pressures is evaluated in this paper. A set-up and a calibrationmethodology are suggested and employed for thiswork. The system is validated against ... -
Nonlinear regular wave generation in numerical and physical flumes
Castro Alves Oliveira, Tiago; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín; Sierra Pedrico, Juan Pablo; Celigueta Jordana, Miguel Ángel (2010)
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Numerical modelling of coastal defences using the smoothed particle hydrodynamic method
Crespo, Alejandro; Altomare, Corrado; Rogers, Benedict D.; Dominguez, Jose; Gironella Cobos, Xavier (2013)
Text en actes de congrés
Accés restringit per política de l'editorialThe present paper reports the results of the application of the Smoothed Particle Hydrodynamics (SPH) method to model the wave run-up over an armour breakwater. The units that form the outer layer of the structure have ... -
On the generation of regular long waves in numerical wave flumes based on the particle finite element method
Castro Alves Oliveira, Tiago; Sánchez-Arcilla Conejo, Agustín; Gironella Cobos, Xavier; Madsen, Ole S. (2017-08)
Article
Accés obertMost of the coastal hydraulic studies in physical and numerical wave flumes (NWF) require the correct generation of nonlinear, long period waves at intermediate and shallow water conditions. In this paper, the ability to ... -
Overtopping formula for vertical tiers-headed breakwaters
Altomare, Corrado; Damiani, Leonardo; Gironella Cobos, Xavier (2011)
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Accés obertThe semi-empirical methods are useful tools to understand the wave overtopping phenomena, but uncertainty remains on their applicability. It’s necessary to carry out campaign surveys or laboratory tests to support them. ... -
Overtopping metrics and coastal safety: a case of study from the Catalan coast
Altomare, Corrado; Gironella Cobos, Xavier; Suzuki, T.; Viccione, Giacomo; Saponieri, Alessandra (MDPI, 2020-08)
Article
Accés obertDesign criteria for coastal defenses exposed to wave overtopping are usually assessed by mean overtopping discharges and maximum individual overtopping volumes. However, it is often difficult to give clear and precise ... -
Quasi-dynamic mooring line model
Trubat Casal, Pau; Molins i Borrell, Climent; Gironella Cobos, Xavier (2022-01-01)
Article
Accés obertThe quasi-dynamic mooring line model is a new approach to assess the mooring line tension that considers the static solution of the catenary shape, but updates the distributed vertical force along the mooring line as a ... -
Relationship between eroded volume and main scour hole dimensions near quay walls caused by internal counter-rotating twin-propellers
Curulli, Giuseppe; Llull Marroig, Antoni Ignaci; Penna, Nadia; Mujal Colilles, Anna; Gironella Cobos, Xavier; Sánchez Arcilla, Agustín; Gaudio, Roberto (2022-07-14)
Article
Accés obertThe present study aims at computing and analysing the eroded sediment volumes induced by twin-propeller jets near a vertical quay wall from the main geometric characteristics of the scour hole. Two different scouring ... -
Reliability analysis of beaches as defenses against storm impacts under a climate change scenario
Sánchez-Arcilla Conejo, Agustín; Gómez Martínez, Marta; Gracia Garcia, Vicente; Gironella Cobos, Xavier; García León, Manuel (2014)
Comunicació de congrés
Accés obertAn analysis of the probability of failure of beaches along the Catalan coast (Northwestern Mediterranean) is presented. The failure condition is defined when waves are able to overtop the beach and reach the backshore. The ... -
Restoring and rehabilitation of historical coastal asset with SPH
Altomare, Corrado; Gironella Cobos, Xavier; Cabrera Crespo, Alejandro; Domínguez Alonso, José Manuel; Tafuni, Angelantonio; Muñoz-Ramos, Gregori (Istituto Nazionale di Geofisica e Vulcanologia (INGV), 2022)
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Accés restringit per política de l'editorialOn January 20th, 2020, the storm Gloria caused the failure of the seaward platform and part of the footbridge of the Pont del Petroli pier at the beach of Badalona (Spain). A beam of about 15 m fell into the sea due to ... -
Riesgos costeros y técnicas ópticas de observación
Sánchez-Arcilla Rosanas, Agustín; García León, Manuel; Gracia Garcia, Vicente; Marzeddu, Andrea; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín (2018-03)
Article
Accés restringit per política de l'editorialLa intensificación de la presión de uso sobre nuestro litoral está generando un incremento de los niveles de riesgo, entendido como la probabilidad de un suceso por el valor económico de sus consecuencias. El aumento del ... -
Scouring processes in harbour basins during the docking and undocking manoeuvring: laboratory experiments
Mujal Colilles, Anna; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín (Universidad de Cantabria, 2017-07-25)
Article
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Scouring processes in harbour basins during the docking and undocking manoeuvring: laboratory experiments
Mujal Colilles, Anna; Gironella Cobos, Xavier; Sánchez-Arcilla Conejo, Agustín (Iniciativa Digital Politècnica, 2016)
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Ship manoeuvre analysis and simulation to obtain scouring related propeller variables
Llull Marroig, Antoni Ignaci; Mujal Colilles, Anna; Gironella Cobos, Xavier; Castells Sanabra, Marcel·la; Martínez de Osés, Francesc Xavier; Martín Mallofré, Agustí; Sánchez-Arcilla Conejo, Agustín (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
Comunicació de congrés
Accés obertThe evolution of shipping industry in terms of bigger and more powerful ships, is causing several issues in existing ports and marinas designed, initially, to host smaller vessels with smaller propulsion systems and lower ... -
Ship manoeuvre patterns to prevent propeller scouring effects
Castells Sanabra, Marcel·la; Mujal Colilles, Anna; Llull Marroig, Antoni Ignaci; Gironella Cobos, Xavier; Martínez de Osés, Francesc Xavier; Martín Mallofré, Agustí; Sánchez-Arcilla Conejo, Agustín (World Association for Waterborne Transport Infrastructure (PIANC), 2018)
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Ship manoeuvring effects on propeller induced erosion
Mujal Colilles, Anna; Llull Marroig, Antoni Ignaci; Castells Sanabra, Marcel·la; Gironella Cobos, Xavier; Martínez de Osés, Francesc Xavier; Sánchez-Arcilla Conejo, Agustín (2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe shipping industry evolution over the last decades has led to growing structural and operational problems, in particular, for old marinas with lower depths to hosts present ships and with higher drafts and power of ... -
Ship propeller effects on harbours
Llull Marroig, Antoni Ignaci; Mujal Colilles, Anna; Castells Sanabra, Marcel·la; Gironella Cobos, Xavier (Texas Digital Library, 2020)
Text en actes de congrés
Accés obertThe increase in marine traffic during the last decades has led to important changes in ship designs. These changes have been directly affecting harbor structures designed to host smaller and less powerful ships. One of the ... -
Simulation of a flexible fish farming net in currents and waves with DualSPHysics: maritime and naval architecture applications
González Ávalos, Raúl; Altomare, Corrado; Gironella Cobos, Xavier; Cabrera Crespo, Alejandro; Martinez Estevez, Ivan (Istituto Nazionale di Geofisica e Vulcanologia (INGV), 2022)
Text en actes de congrés
Accés restringit per política de l'editorialIn high-energy sea states, the deformation of fish farming nets is a limiting factor in the design, therefore it is necessary to have adequate models of flexible nets. However, the standard industrial modelling software ...