Browsing by Author "Ayats López, Roger"Més informacióMés informació

Now showing items 1-9 of 9

    • Disseny d'un túnel de vent per aplicacions en arquitectura 

      Ayats López, Roger (Universitat Politècnica de Catalunya, 2012-07-18)
      Bachelor thesis
      Restricted access - author's decision
      Actualment a Catalunya existeixen pocs túnels de vent operatius que puguin ser emprats amb regularitat. Tanmateix, cap d’ells és adient per l’anàlisi de les càrregues aerodinàmiques sobre un edifici en una escala adient ...

    • Exact coherent structures in the transitional regime of shear and centrifugal flows 

      Ayats López, Roger (Universitat Politècnica de Catalunya, 2022-04-22)
      Doctoral thesis
      Open Access
      Turbulence is one of the major concerns for most technological problems involving fluid motion. Specially in aeronautics, a turbulent boundary layer results in structural stresses, vibrations and higher aircraft drag, ...

    • Examen final 

      Ribas Prats, Francesca; Massignan, Pietro Alberto; Ayats López, Roger (Universitat Politècnica de Catalunya, 2019-01-11)
      Exam
      Restricted access to the UPC academic community

    • Flows between orthogonally stretching parallel plates 

      Ayats López, Roger; Marqués Truyol, Francisco; Meseguer Serrano, Álvaro; Weidman, Patrick (2021-02-01)
      Article
      Open Access
      Navier–Stokes equilibrium solutions of a viscous fluid confined between two infinite parallel plates that can independently stretch or shrink in orthogonal directions are studied. It is assumed that the admissible solutions ...

    • Fully nonlinear mode competition in magnetised Taylor-Couette flow 

      Ayats López, Roger; Deguchi, Kengo; Mellibovsky Elstein, Fernando; Meseguer Serrano, Álvaro (2020-08-25)
      Article
      Open Access
      We study the nonlinear mode competition of various spiral instabilities in magnetised Taylor-Couette flow. The resulting finite-amplitude mixed-mode solution branches are tracked using the annular-parallelogram periodic ...

    • Mean structure of the supercritical turbulent spiral in Taylor–Couette flow 

      Wang, Baoying; Mellibovsky Elstein, Fernando; Ayats López, Roger; Deguchi, Kengo; Meseguer Serrano, Álvaro (Royal Society, 2023-03-13)
      Article
      Open Access
      The large-scale laminar/turbulent spiral patterns that appear in the linearly unstable regime of counter-rotating Taylor–Couette flow are investigated from a statistical perspective by means of direct numerical simulation. ...

    • Phase-locking flows between orthogonally stretching parallel plates 

      Wang, Baoying; Ayats López, Roger; Meseguer Serrano, Álvaro; Marqués Truyol, Francisco (2022-11-04)
      Article
      Open Access
      In this paper, we explore the stability and dynamical relevance of a wide variety of steady, time-periodic, quasiperiodic, and chaotic flows arising between orthogonally stretching parallel plates. We first explore the ...

    • Projecte d’un avió contra incendis amfibi 

      Ayats López, Roger (Universitat Politècnica de Catalunya, 2015-06)
      Master thesis (pre-Bologna period)
      Open Access
      El nombre d’aeronaus amfíbies dissenyades per a l’extinció d’incendis és molt reduït. Només s’ha desenvolupat un únic model específicament amb aquest objectiu, mentre que els altres són meres adaptacions d’aeronaus comercials ...

    • Symmetry-breaking waves and space-time modulation mechanisms in two-dimensional plane Poiseuille flow 

      Ayats López, Roger; Meseguer Serrano, Álvaro; Mellibovsky Elstein, Fernando (2020-09-18)
      Article
      Open Access
      We investigate two distinct scenarios of spatial modulation that are candidate mechanisms for streamwise localization of waves in two-dimensional plane Poiseuille flow. The first one stems from a symmetry-breaking bifurcation ...