Enviaments recents

  • Study of commuting on-demand shared ride-hailing:first results from a case study in Barcelona 

    Gilibert, Mireia; Ribas Vila, Immaculada; Rodríguez Donaire, Silvia (Brebbia - Wessex Institut of Technology, 2019)
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    Shared ride-hailing services are discreetly emerging in cities all over the world, with the purpose of providing a transport service more flexible than the public bus and cheaper than the regular taxi. Hence, it is important ...
  • On the role of a centrifugal instability in the vortex-induced vibration of a two-degrees of freedom circular cylinder at moderate Reynolds numbers 

    Pastrana, Daniel; Cajas, J.C.; Lehmkuhl, Oriol; Rodríguez Pérez, Ivette María; Vazquez, Mariano; Houzeaux, Guillaume (2018)
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    In this work, the formation and role of a centrifugal instability in the VIV phenomenon at moderate Reynolds numbers are investigated for the ¿rst time. Large eddy simulations of a low mass ratio (m = 2.6) two-degree-of-freedom ...
  • On the effects of free-stream turbulence intensity in the fluid flow and heat transfer from a sphere at subcritical Reynolds numbers 

    Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Soria Guerrero, Manel; Gomez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2018)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    In this work, the effect of the free-stream turbu-lence on the heat transfer and the near wake behind a sphere is studied at moderate Reynolds numbers of ¿¿ ¿ ¿¿¿¿ and ¿¿ ¿ ¿¿¿. Turbulence delays the sep-aration of the ...
  • Effects of applied magnetic field on IPG6-S, test-bed for an ABEP-based inductive plasma thruster (IPT) 

    Romano, Francesco; Herdrich, Georg; Binder, Tilman; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (Association Aéronautique et Astronautique de France, 2018)
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    An atmosphere-breathing electric propulsion system (ABEP) captures the residual atmosphere of a planet and uses it as propellant for an electric thruster to counteract the drag. The system would theoretically allow orbiting ...
  • Noise Radiated by an Open Cavity at Low Mach Number 

    Martín Navarrete, Rocío; Soria Guerrero, Manel; Lehmkuhl, Oriol; Gorobets, Andrei; Cante Terán, Juan Carlos; Vidal Pairot, Pere (2018)
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    The present work focuses on the study of noise generation and radiation of unsteady laminar flow over an open three dimensional cavity at low Mach number, that is of interest to understand noise generation mechanisms in ...
  • Three dimensional analysis of ahmed body aerodynamic performance enhancement using steady suction and blowing flow control techniques 

    Prakash, Bhanu; Bergadà Granyó, Josep Maria; Mellibovsky Elstein, Fernando (2018)
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    Aerodynamic drag reduction plays a vital role in the reduction of automobiles fuel consumption. Boundary layer physics and its intricate mechanisms that result in flow separation are to be understood and manipulated using ...
  • Three dimensional structures of flow through a square cylinder with an upstream splitter plate and for several velo city ratios 

    El Mansy, Reda; Sarwar, Wasim; Rodríguez Pérez, Ivette María; Bergadà Granyó, Josep Maria (2018)
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    In the present paper, three-dimensional Fluid structures and wake characteristics are evaluated for a square cylinder with an upstream splitter plate. The splitter plate divides the incoming flow in two streams, the ...
  • On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers 

    Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2018)
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    Direct and large-eddy numerical simulations have been performed for a heated sphere at Reynolds numbers 200, 300, 500, 750, 1000 and 104, in the context of the development of a spherical wind sensor for Mars atmosphere ...
  • Boundary layer flow control using synthetic jets on the flow over a NACA 0012 airfoil 

    Duran, David; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel; Lehmkuhl, Oriol (2017)
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    Numerical simulations of the flow control using a synthetic jet are presented. The flow considered is around a NACA 0012 airfoil at Re = 5000 and the actuator is located at 6% of the chord from the leading edge. This work ...
  • System analysis and test-bed for an atmosphere-breathing electric propulsion system using an inductive plasma thruster 

    Romano, Francesco; Binder, Tilman; Herdrichd, Georg H.; Roberts, Peter C.E; Rodríguez Donaire, Silvia; García-Almiñana, Daniel (2017)
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    Challenging space mission scenarios include those in very low Earth orbits, where the atmosphere creates significant drag to the S/C and forces their orbit to an early decay. For drag compensation, propulsion systems are ...
  • DISCOVERER - Radical Redesign of Earth Observation Satellites for Sustained Operation at Significantly Low Altitudes 

    Roberts, Peter C.E; Crisp, Nicholas H.; Edmonson, Steve; García-Almiñana, Daniel; Rodríguez Donaire, Silvia (2017)
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    DISCOVERER is a new 5.7 million Euro, 4.25 year Horizon 2020 funded project which aims to radically redesign Earth observation satellites for sustained operation at significantly lower altitudes. The satellite based Earth ...
  • Performance Evaluation of a Novel Inductive Atmosphere-Breathing EP System 

    Romano, Francesco; Herdrichd, Georg H.; Fasoulas, Stefanos; García-Almiñana, Daniel; Rodríguez Donaire, Silvia (2017)
    Comunicació de congrés
    Accés obert
    Challenging space mission scenarios include those in low altitude orbits, where the atmosphere creates significant drag to the S/C and forces their orbit to an early decay. An atmosphere-breathing electric propulsion system ...

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