Now showing items 1-20 of 37

    • An exactly solvable model in P.R.M.: quantization. II 

      Iranzo Fernández, Vicente; Llosa, J; Marqués Truyol, Francisco; Molina, A (1984-01)
      Article
      Open Access
      The quantization of a priori hamiltonian predictive systems is studied. It is applied to quantize the family of N-particle relativistic models presented in ref. 1. The relativistic two-particle oscillator is studied in ...
    • Bifurcations with imperfect SO(2) symmetry and pinning of rotating waves 

      Marqués Truyol, Francisco; Meseguer Serrano, Álvaro; Lopez, Juan M.; Pacheco, Jose Rafael; López Alonso, José Manuel (2013-04-08)
      Article
      Restricted access - publisher's policy
      Rotating waves are periodic solutions in SO(2) equivariant dynamical systems. Their precession frequency changes with parameters and it may change sign, passing through zero. When this happens, the dynamical system is very ...
    • Conductive and convective heat transfer in fluid flows between differentially heated and rotating cylinders 

      López, José M.; Marqués Truyol, Francisco; Àvila 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 ...
    • Confined rotating convection with large Prandtl number: centrifugal effects on wall modes 

      Curbelo Hernández, Jezabel; López Moscat, Juan Manuel; Mancho Sánchez, Ana María; Marqués Truyol, Francisco (2014-01-23)
      Article
      Open Access
      Thermal convection in a rotating cylinder with a radius-to-height aspect ratio of G=4 for fluids with large Prandtl number is studied numerically. Centrifugal buoyancy effects are investigated in a regime where the Coriolis ...
    • Crossflow instability of finite Bödewadt flows: transients and spiral waves 

      López, Juan A.; Marqués Truyol, Francisco; Rubio, Antonio M.; Àvila Cañellas, Marc (2009-11)
      Article
      Open Access
      The flow in an enclosed rotating cylinder with a stationary lower end wall is investigated numerically. For fast rotation rates, the flow in the interior is primarily in the azimuthal direction, with an angular momentum ...
    • Dynamics of axially localized states in Taylor-Couette flows 

      López Alonso, José Manuel; Marqués Truyol, Francisco (2015-05-15)
      Article
      Open Access
      We present numerical simulations of the flow confined in a wide gap Taylor-Couette system, with a rotating inner cylinder and variable length-to-gap aspect ratio. A complex experimental bifurcation scenario differing from ...
    • Extensional and torsional pipe flow 

      Marqués Truyol, Francisco; Meseguer Serrano, Álvaro (2019-10-31)
      Article
      Open Access
      We study the dynamics of a viscous fluid confined within an elastic pipe that is being stretched and twisted in the axial and azimuthal directions, respectively. A comprehensive numerical exploration of self-similar flows ...
    • Extensional channel flow revisited: a dynamical systems perspective 

      Marqués Truyol, Francisco; Meseguer Serrano, Álvaro; Mellibovsky Elstein, Fernando; Weidman, Patrick (2017-06-07)
      Article
      Open Access
      Extensional self-similar flows in a channel are explored numerically for arbitrary stretching–shrinking rates of the confining parallel walls. The present analysis embraces time integrations, and continuations of steady ...
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2016-04-12)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2012-07-12)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2014-07-04)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2012-03-28)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2014-06-05)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2012-06-11)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2014-03-28)
      Exam
      Restricted access to the UPC academic community
    • FÍSICA 

      Marqués Truyol, Francisco (Universitat Politècnica de Catalunya, 2016-06-07)
      Exam
      Restricted access to the UPC academic community
    • Fold-pitchfork bifurcation for maps with Z(2) symmetry in pipe flow 

      Marqués Truyol, Francisco; Mellibovsky Elstein, Fernando; Meseguer Serrano, Álvaro (2013-07-11)
      Article
      Open Access
      This study aims to provide a better understanding of recently identified transition scenarios exhibited by traveling wave solutions in pipe flow. This particular family of solutions are invariant under certain reflectional ...
    • Inertial waves in rapidly rotating flows: a dynamical systems perspective 

      López Moscat, Juan Manuel; Marqués Truyol, Francisco (2016-11-02)
      Article
      Open Access
      An overview of recent developments in a wide variety of enclosed rapidly rotating flows is presented. Highlighted is the interplay between inertial waves, which have been predicted from linear inviscid considerations, and ...
    • Instabilities and inertial waves generated in a librating cylinder 

      López, J.M.; Marqués Truyol, Francisco (2011-11-25)
      Article
      Restricted access - publisher's policy
      A librating cylinder consists of a rotating cylinder whose rate of rotation is modulated. When the mean rotation rate is large compared with the viscous damping rate, the flow may support inertial waves, depending on the ...
    • Instability mechanisms and transition scenarios of spiral turbulence in Taylor-Couette flow 

      Meseguer Serrano, Álvaro; Mellibovsky Elstein, Fernando; Àvila Cañellas, Marc; Marqués Truyol, Francisco (2009-10)
      Article
      Open Access
      Alternating laminar and turbulent helical bands appearing in shear flows between counterrotating cylinders are accurately computed and the near-wall instability phenomena responsible for their generation identified for the ...