Recent Submissions

  • Precession of a rapidly rotating cylinder flow: traverse through resonance 

    Marqués Truyol, Francisco; López Moscat, Juan Manuel (2015-10-06)
    Article
    Restricted access - publisher's policy
    Recent experiments using a rapidly rotating and precessing cylinder have shown that for specific values of the precession rate, aspect ratio and tilt angle, sudden catastrophic transitions to turbulence occur. Even if the ...
  • Continuation and stability of convective modulated rotating waves in spherical shells 

    García González, Fernando; Net Marcé, Marta; Sánchez Umbría, Juan (2016-01-01)
    Article
    Open Access
    Modulated rotating waves (MRW), bifurcated from the thermal-Rossby waves that arise at the onset of convection of a fluid contained in a rotating spherical shell, and their stability, are studied. For this purpose, ...
  • Critical torsional modes of convection in rotating fluid spheres at high Taylor numbers 

    Sánchez Umbría, Juan; García González, Fernando; Net Marcé, Marta (2016-02-15)
    Article
    Restricted access - publisher's policy
    A numerical study of the onset of convection in rotating internally heated self-gravitating fluid spheres is presented. The exploration of the stability of the conduction state versus the Taylor and Prandtl numbers supplies ...
  • Bone tissue properties measurement by reference point indentation in glucocorticoid-induced osteoporosis 

    Mellibovsky, Leonardo; Prieto Alhambra, Daniel; Mellibovsky Elstein, Fernando; Gueerri Fernandez, Roberto; Nogues, Xavier; Randall, Connor; Hansma, Paul K.; Diez Perez, Adolfo (2015-09-01)
    Article
    Restricted access - publisher's policy
    Glucocorticoids, widely used in inflammatory disorders, rapidly increase bone fragility and, therefore, fracture risk. However, common bone densitometry measurements are not sensitive enough to detect these changes. Moreover, ...
  • El canvi climàtic a través dels informes de l'IPCC (1990-2014) 

    Mazón Bueso, Jordi (Càtedra UNESCO en Sostenibilitat., 2016-01-20)
    Article
    Open Access
    Des de que l’any 1990 es va publicar el primer informe del Panell Intergovernamental del Canvi Climàtic (en anglès IPCC) quatre més han aparegut (els anys 1995, 2001, 2007 i 2014), els quals ens donen una visió de ...
  • Conductive and convective heat transfer in fluid flows between differentially heated and rotating cylinders 

    López, José M.; Marqués Truyol, Francisco; Avila Cañellas, Marc (2015-11-01)
    Article
    Open Access
    The flow of fluid confined between a heated rotating cylinder and a cooled stationary cylinder is a canonical experiment for the study of heat transfer in engineering. The theoretical treatment of this system is greatly ...
  • Testing otter board hydrodynamic performances in wind tunnel facilities 

    Mellibovsky Elstein, Fernando; Prat Farran, Joana d'Arc; Notti, Emilio; Sala, Antonello (2015-08-01)
    Article
    Restricted access - publisher's policy
    The feasibility and potential advantages of wind tunnel testing of otter board designs are assessed. Traditional flume tank tests incur high operational costs and present some limitations in terms of flexibility and accuracy. ...
  • On the determination of diffusion coefficients in two-component alloys and doped semiconductors: several implications concerning the International Space Station 

    Sánchez Meneses, O.; Ruiz Martí, Xavier; Pujalte, Mónica; Mercader Calvo, María Isabel; Batiste Boleda, Oriol; Gavaldà, Josefina (2015-07-01)
    Article
    Restricted access - publisher's policy
    The accurate determination of mass diffusion coefficients is a technologically relevant problem that has implications on the modelling and control of material processes such as crystal growth and casting. It is also important ...
  • Radial collocation methods for the onset of convection in rotating spheres 

    Sánchez Umbría, Juan; García González, Fernando; Net Marcé, Marta (2016-03-01)
    Article
    Open Access
    The viability of using collocation methods in radius and spherical harmonics in the angular variables to calculate convective flows in full spherical geometry is examined. As a test problem the stability of the conductive ...
  • A mechanism for streamwise localisation of nonlinear waves in shear flows 

    Mellibovsky Elstein, Fernando; Meseguer Serrano, Álvaro (2015-09-01)
    Article
    Open Access
    We present the complete unfolding of streamwise localisation in a paradigm of extended shear flows, namely two-dimensional plane Poiseuille flow. Exact solutions of the Navier-Stokes equations are computed numerically and ...

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