Listar por autor "López Alonso, José Manuel"
Mostrando ítems 1-14 de 14
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Arrow-shaped elasto-inertial rotating waves.
López-Alonso, José Manuel
; Altmeyer, Sebastian (The Royal Society, 2023-03-13)
We present direct numerical simulations of the Taylor– Couette flow of a dilute polymer solution when only the inner cylinder rotates and the curvature of the system is moderate (η = 0.77). The finitely extensible nonlinear ... -
Bifurcations with imperfect SO(2) symmetry and pinning of rotating waves
Marqués, Francisco; Meseguer, Alvaro; López, Juan Manuel; Pacheco, Rafael; López-Alonso, José Manuel (Royal Society Publishing, 2013-04-08)
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Boundary-layer turbulence in experiments on quasi-Keplerian flows
López-Alonso, José Manuel; Ávila, Marc (Cambridge University Press, 2017-03-15)
Most flows in nature and engineering are turbulent because of their large velocities and spatial scales. Laboratory experiments on rotating quasi-Keplerian flows, for which the angular velocity decreases radially but the ... -
Cardiac-cycle-inspired turbulent drag reduction.
Flows through pipes and channels are in practice almost always turbulent and the eddying motion is responsible for the major part of the encountered friction losses and pumping costs. Conversely, for pulsatile flows, in ... -
DNS of turbulent flow with uniform heat flux in a pipe
Parras-Anguita, Luis; López-Alonso, José Manuel (2022-06-19)
In this work we present results of direct numerical simulations (DNS) of the flow in a circular pipe at moderate Reynolds numbers, where a uniform heat flux is imposed on the walls. The simulations are performed by varying ... -
Dynamics of the wing-tip vortex in the near field of a NACA 0012 aerofoil
Del-Pino-Peñas, Carlos Manuel; López-Alonso, José Manuel; Parras-Anguita, Luis; Fernández-Feria, Ramón (Cambridge University Press, 2011-04)
The dynamics of the wing tip vortex in the near-field of a NACA 0012 aerofoil has been analysed by means of flow visualisations in a water tunnel. Different axial distances near the wing up to four chords, Reynolds numbers ... -
Dynamics of viscoelastic pipe flow at low Reynolds numbers in the maximum drag reduction limit
López-Alonso, José Manuel; Choueiri, George H.; Hof, Björn (Cambridge University Press, 2019-07-12)
Polymer additives can substantially reduce the drag of turbulent flows and the upper limit, the so-called state of ‘maximum drag reduction’ (MDR), is to a good approximation independent of the type of polymer and solvent ... -
Estudio numérico sobre transferencia de calor en tuberías con flujo pulsante
(2023-09)Este trabajo de fin de grado (TFG) presenta un análisis numérico sobre transferencia de calor dentro de una tubería con flujo laminar, donde la velocidad del fluido sigue un patrón senoidal (conocido como flujo pulsante ... -
Exceeding the Asymptotic Limit of Polymer Drag Reduction.
Choueiri, George H.; López-Alonso, José Manuel; Hof, Björn (APS, 2018-03-19)
The drag of turbulent flows can be drastically decreased by addition of small amounts of high molecular weight polymers. While drag reduction initially increases with polymer concentration, it eventually saturates to ... -
Mejora de la metodología docente en campus virtual para la consecución de los objetivos de aprendizaje en asignaturas de turbomáquinas hidráulicas.
(2023)El objeto del presente Trabajo de Fin de Grado (TFG) es analizar, evaluar y proponer mejoras en la metodología docente utilizada en el campus virtual para las asignaturas de turbomáquinas hidráulicas. El enfoque se centra ... -
Stably stratified Taylor–Couette flows.
López-Alonso, José Manuel; López, Juan Manuel; Marques Truyol, Francisco (The Royal Society, 2023-03-01)
Stably stratified Taylor–Couette flow has attracted much attention due to its relevance as a canonical example of the interplay among rotation, stable stratification, shear and container boundaries, as well as its ... -
The Boussinesq approximation in rapidly rotating flows
López-Alonso, José Manuel; Marqués, Francisco; Ávila, Marc (Cambridge University Press, 2013-11-15)
In commonly used formulations of the Boussinesq approximation centrifugal buoyancy effects related to differential rotation, as well as strong vortices in the flow, are neglected. However, these may play an important role ... -
Turbulence suppression by cardiac-cycle-inspired driving of pipe flow.
Scarselli, Davide; López-Alonso, José Manuel; Varshney, Atul; Hof, Bjoern (Nature Publishing Group UK, 2023-09-06)
Flows through pipes and channels are, in practice, almost always turbulent, and the multiscale eddying motion is responsible for a major part of the encountered friction losses and pumping costs1. Conversely, for pulsatile ...