Browsing by Subject "Sorra"

Now showing items 1-20 of 23

    • 8.18 - Rhythmic Coastal Landforms 

      Giovanni, Coco; Calvete Manrique, Daniel; Bryan, K.R.; Murray, A.B. (Elsevier, 2022)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Coastal landforms can sometimes result in unique and visually mesmerizing spatially-organized patterns. Different spatial patterns develop over scales ranging from centimeters to tens of kilometers, and are observed at the ...

    • A dust cleaning system for solar arrays on Mars using pressurized CO2 

      Arias Montenegro, Francisco Javier (2018-11-15)
      Article
      Restricted access - publisher's policy
      Obtaining CO2 from the Martian atmosphere through a freezing process has been proposed during de last decade as a means of obtaining high-pressure gas without having to use mechanical and sorption pumps -which, besides ...

    • A new shoreline instability mechanism related to high-angle waves 

      Falqués Serra, Albert; Kakeh Burgada, Nabil; Calvete Manrique, Daniel (2017)
      Conference report
      Open Access
      A new shoreline instability triggered by high-angle waves and leading to sand wave formation is investigated. In contrast with the well-known high angle wave instability, which involves both the surf and shoaling zones and ...

    • Cone penetration tests in a virtual calibration chamber 

      Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio; Calvetti, Francesco; Jamiolkowski, Michael (2011)
      Article
      Restricted access - publisher's policy
      A virtual calibration chamber was built using a threedimensional model based on the discrete-element method. The chamber was then filled with a scaled granular equivalent of Ticino sand, the material properties of which ...

    • A coupled CFD-DEM model for sand production in oil wells 

      Climent Pera, Natalia (Universitat Politècnica de Catalunya, 2016-10-17)
      Doctoral thesis
      Open Access
      During the oil recovery a hole is drilled, the sandstone is left unsupported next to the cavity and disloged sand grains can enter the oil recovery system. This process is called sand production and several problems may ...

    • Dispositiu recollidor de microplàstics i mesoplàstics per a zones de difícil accés 

      Colom Antolinos, Marc; Marco Cama, Sandra (Universitat Politècnica de Catalunya, 2022-07-14)
      Bachelor thesis
      Restricted access - author's decision
      Darrerament, els plàstics s’han expandit arreu del món, tot invadint ecosistemes on inlfueixen negativament en la fauna i flora que hi habita. Amb l’erosió i el pas del temps, dels plàstics més grans, se’n deriven d’altres ...

    • Effect of suction and plasticity on the shear strength of sand/silt mixtures 

      Villar, María Victoria; Martín, Pedro Luís; Gómez-Espina, Ramón; Lloret Morancho, Antonio (Taylor & Francis, 2010)
      Conference lecture
      Restricted access - publisher's policy
      This paper presents results of an experimental study on the effect of suction on the shear behaviour of sand/silt mixtures as determined with direct shear tests performed under suction control. The device used to perform ...

    • Effect of wave-bedform feedbacks on the formation of, and grain sorting over shoreface-connected sand ridges 

      Vis-Star, Nicolette C.; Swart, Huib E. de; Calvete Manrique, Daniel (2009-11)
      Article
      Restricted access - publisher's policy
      The influence of wave–bedform feedbacks on both the initial formation of shoreface-connected sand ridges (sfcr) and on grain size sorting over these ridges on micro-tidal inner shelves is studied. Also, the effect of ...

    • Estudio Microestructural del Rock Sanding 

      Garolera Vinent, Daniel (Universitat Politècnica de Catalunya, 2003-01-01)
      Minor thesis
      Open Access
      Castellà: El estudio de la producción de arena (rock sanding) en pozos petrolíferos ha sido objeto importante de investigación durante los últimos años debido al auge de las nuevas técnicas de producción: perforación con ...

    • Experimental study of the corona performance of aged sand-cast substation connectors 

      Riba Ruiz, Jordi-Roger; Bogarra Rodríguez, Santiago; Gómez Pau, Álvaro; Moreno Eguilaz, Juan Manuel (2020-06-01)
      Article
      Open Access
      Substation connectors, like many other high-voltage products, are tested once manufactured. However, the corona behavior of aged specimens can differ from that exhibited by newer ones, thus generating detrimental technical ...

    • Fluid effects in sand production simulations coupling DEM with CFD 

      Climent Pera, Natalia; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; O'Sullivan, Catherine (CRC Press Taylor & Francis Group, 2014)
      Conference report
      Restricted access - publisher's policy
      Sand production around a wellbore is here simulated using a three dimensional numerical model based on Discrete Element Method (DEM) coupled with Computational Fluid Dynamics (CFD). The model is calibrated against a ...

    • Gas migration in sand/bentonite mixtures through preferential paths 

      Arnedo Gaute, Diego; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Romero Morales, Enrique Edgar (2011)
      Conference report
      Restricted access - publisher's policy
      Sand/bentonite mixtures are considered as buffer material in low and medium radioactive waste disposal schemes. While the bentonite provides low permeability and swelling capacity, the sand is intended to improve mechanical ...

    • Grading evolution and critical state in a discrete numerical model of Fontainebleau sand 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; O'Sullivan, Catherine; Gens Solé, Antonio; Liu, T. (Thomas Telford, 2019-01)
      Article
      Open Access
      Granular materials reach critical states upon shearing. The position and shape of a critical state line (CSL) in the compression plane are important for constitutive models, interpretation of in situ tests and liquefaction ...

    • Long-term morphodynamics of a coupled shelf-shoreline system forced by waves and tides, a model approach 

      Nnafie, Abdel; de Swart, Huib E.; Falqués Serra, Albert; Calvete Manrique, Daniel (American Geophysical Union (AGU), 2021-12)
      Article
      Open Access
      Sand ridges, with length scales of several km, are prominent features of the seafloor landscape of many sandy continental shelves. Knowledge about the extent to which these ridges influence the large-scale (i.e., decadal ...

    • Magnetic Mars dust removal technology: a dustblasting technique for Mars 

      Arias Montenegro, Francisco Javier (2018-01)
      Article
      Restricted access - publisher's policy
      It is known that the Martian atmosphere contains a large amount of suspended dust. The saltation process, or gravitational settlement of atmospheric dust, onto the surface of solar arrays can affect the utility of solar ...

    • Màquina per a la recollida de microplàstics a les platges 

      Juan Esteo, Alejandro (Universitat Politècnica de Catalunya, 2020-02-05)
      Bachelor thesis
      Restricted access - author's decision
      [CATALÀ] La finalitat fonamental d’aquest projecte ha sigut desenvolupar un màquina per la recollida de microplàstics a les platges. La majoria de maquinària per a la neteja de platges elimina tot tipus de residus (taps, ...

    • Mechanical and basic deformation properties of mortar with recycled glass as a fine aggregate replacement 

      Cabrera Covarrubias, Francisca Guadalupe; Gómez Soberón, José Manuel Vicente; Almaral Sánchez, Jorge Luis; Arredondo Rea, Susana Paola; Mendivil Escalante, José Miguel (Springer, 2018)
      Article
      Restricted access - author's decision
      As a result of the large quantities of glass residues being generated, research is currently underway for efficient, economic and eco-friendly alternatives, among them the incorporation of recycled glass in mortar as a ...

    • Onshore sandbar migration in the surf zone: new insights into the wave-induced sediment transport mechanisms 

      Fernández Mora, María de los Ángeles; Calvete Manrique, Daniel; Falqués Serra, Albert; de Swart, Huib E. (2015-04-28)
      Article
      Open Access
      We present a novel process-based morphodynamic model, which includes transport processes due to both velocity and acceleration skewness and a new formulation for intrawave motions, that successfully simulates observations ...

    • Preliminary Studies on Metal Adsorption by Waste Foundry Sand 

      Afonso, Ana (Universitat Politècnica de Catalunya, 2011-07-15)
      Master thesis
      Open Access
      In the casting industries, sand is typically reused through the production cycles. Since sand for itself do not have the necessary properties to this process, it’s necessary to introduce binders to force the sand grains ...

    • Propostes d'actuació a la riera de Banyeres del Penedès 

      Cobos Climent, Aitor (Universitat Politècnica de Catalunya, 2015-05-28)
      Bachelor thesis
      Open Access
      The Riera de Sant Miquel passing through the town of Banyeres de Penedès of arouses interest, but it is necessary to find solutions in order to increase biodiversity and continue to generate new services ecosystem by ...