Enviaments recents

  • Magnetic Mars dust-removal technology 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (springer-Verlag, 2019-02-04)
    Article
    Accés restringit per política de l'editorial
    Environmental data recorded by the Mars exploration rovers show that the martian dust is magnetic containing mostly the strong magnetic mineral magnetite ( Fe3O4 ). On the other hand, it is known that dust settling onto ...
  • Sandbraking. A technique for landing large payloads on Mars using the sands of Phobos 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (2019-02)
    Article
    Accés restringit per política de l'editorial
    The basis of a novel braking technique by using the Phobos sands for landing large payloads on Mars is outlined. Here consideration is given to the utilization of the Phobos or Deimos regolith as material for aerobraking ...
  • Dryout and replenishment of bottom-heated saturated porous media with an overlying plain water layer 

    Carbonell Ventura, Montserrat; Virto Albert, Luis; Gámez Montero, Pedro Javier (Multidisciplinary Digital Publishing Institute, 2018-12-13)
    Article
    Accés obert
    The aim of this paper is to elucidate the influence of the physical properties of both phases—solid matrix and saturating liquid—of bottom-heated porous media with an overlying plain water layer. The dryout, the stability ...
  • CFD study of the supercritical transesterification of triolein: Wall-to-fluid/particle-to fluid transport effects 

    Mekala, Samuel Jedidiah; Fontanals García, Alfred; Guardo Zabaleta, Alfredo de Jesús (2019-01-01)
    Article
    Accés restringit per política de l'editorial
    Transesterification of triglycerides is a process by which biodiesel is produced. Biodiesel is a sustainable alternative to petroleum diesel; hence, its efficient production is of significant importance. The transesterification ...
  • Simulation of high temperature superconductors and experimental validation 

    Olm Serra, Marc; Badia, Santiago; Martín Huertas, Alberto Francisco (2018-12)
    Article
    Accés restringit per política de l'editorial
    In this work, we present a parallel, fully-distributed finite element numerical framework to simulate the low-frequency electromagnetic behaviour of superconducting devices, which efficiently exploits high performance ...
  • A review of pzt patches applications in submerged systems 

    Presas, Alexandre; Luo, Yongyao; Wang, Zhengwei; Valentín Ruiz, David; Egusquiza Montagut, Mònica (Multidisciplinary Digital Publishing Institute (MDPI), 2018-07-12)
    Article
    Accés obert
    Submerged systems are found in many engineering, biological, and medicinal applications. For such systems, due to the particular environmental conditions and working medium, the research on the mechanical and structural ...
  • Full-Scale Wind Turbine Vibration Signature Analysis 

    Escaler Puigoriol, Francesc Xavier; Mebarki, Toufik (2018-12-07)
    Article
    Accés obert
    A sample of healthy wind turbines from the same wind farm with identical sizes and designs was investigated to determine the average vibrational signatures of the drive train components during normal operation. The units ...
  • Numerical study on the influence of acoustic natural frequencies on the dynamic behaviour of submerged and confined disk-like structures 

    Bossio, Matias; Valentín Ruiz, David; Presas Batlló, Alexandre; Ramos Martín, David; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica (2017-08)
    Article
    Accés restringit per política de l'editorial
    The dynamic response of disks has been deeply studied in the last years given that their dynamic characteristics present similarities with more complex disk-like structures used in real engineering applications, such as ...
  • Testing of self-similarity and helical symmetry in vortex generator flow simulations 

    Fernandez, Unai; Velte, Clara; Rethore, Pierre Elouan; Sorensen, Niels N.; Egusquiza Estévez, Eduard (2016-06)
    Article
    Accés obert
    Vortex generators (VGs) are used increasingly by the wind turbine industry as flow control devices to improve rotor blade performance. According to experimental observations, the vortices generated by VGs have previously ...
  • A dust cleaning system for solar arrays on Mars using pressurized CO2 

    Arias Montenegro, Francisco Javier (2018-11-15)
    Article
    Accés restringit per política de l'editorial
    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 ...
  • Magnetic Mars dust removal technology: a dustblasting technique for Mars 

    Arias Montenegro, Francisco Javier (2018-01)
    Article
    Accés restringit per política de l'editorial
    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 ...
  • Bond graph simulation of error propagation in position estimation of a hydraulic cylinder using low cost accelerometers 

    Algar, Antonio; Codina Macià, Esteban; Freire Venegas, Francisco Javier (2018-10-01)
    Article
    Accés obert
    The indirect calculation from acceleration of transversal displacement of the piston inside the body of a double effect linear hydraulic cylinder during its operating cycle is assessed. Currently an extensive effort exists ...

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