Enviaments recents

  • A tentative mechanism for dust vertical transport at extreme altitudes from the collapse of supersaturated tropospheric cavities on Mars with particular reference to march 2012 event 

    Arias Montenegro, Francisco Javier (2017)
    Text en actes de congrés
    Accés obert
    Consideration is given to the formation and collapse of supersaturated tropospheric cavities on Mars for dust vertical transport at extreme altitudes as a tentative mechanism explaining the martian march-2012 plume. It ...
  • Gravitomagnetic separation of bipolar charged martian dust 

    Arias Montenegro, Francisco Javier (2017)
    Comunicació de congrés
    Accés obert
    The possible role of magnetic anomalies on Mars in gravitational enhancement of separation of charged dust is considered. It is known that charges become spatially separated by differential transport and gravitational ...
  • The response of an elastic membrane to an external flow as drag enhancement technique 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (American Institute of Aeronautics and Astronautics (AIAA), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The response of an elastic membrane to an external flow and its significance with regard to aerodynamic drag enhancement technique is discussed. It is shown that because the response of an elastic membrane to an external ...
  • The flow over a high-viscosity fluid layer as a drag enhancement technique 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (American Institute of Aeronautics and Astronautics (AIAA), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    It is well known that hydrodynamic drag reduction can be obtained by locally surround-ing an immersed solid boundary with another low viscosity-fluid resulting in a lubricating effect. In aerodynamics propulsion, this ...
  • Parametric analysis of active flow control using steady suction and steady blowing 

    Prakash, Bhanu; Mellibovsky Elstein, Fernando; Bergadà Granyó, Josep Maria (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Active Flow Control is implemented over NACA 2412 airfoil using Steady Suctionand Steady Blowing techniques. The pre-stall angle of attack (AOA) 12 0 is studied at a high Reynolds number (Re chord ) of 3.1*10 6 for ...
  • NACA 2412 performance modification via using AFC 

    Summ, Thorsten; Prakash, Bhanu; Bergadà Granyó, Josep Maria; Wierschem, Andreas; Mellibovsky Elstein, Fernando (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The NACA 2412 profile was numerically studied via employing 2D-DNS and implementing Active Flow Control (AFC), the Reynolds number considered was 6757, being the angle of attack of 8º. Initially, the basic flow without ...
  • Fluidic actuator performance variation via internal dimensions modifications 

    Baghaei, Masoud; Bergadà Granyó, Josep Maria; Campo Sud, David del (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    When aimed to modify the downstream vortex shedding of a given bluff body, whether any road vehicle or wing profile, the use of Active Flow Control (AFC) appears to be an efficient technology. Among the different (AFC) ...
  • Square cylinder with passive flow control 

    An, Bo; Bergadà Granyó, Josep Maria; Mushyam, Aditya (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In the present paper it is presented the flow around a 2D square cylinder which is located downstream of a splitter plate and at a certain distance of it. The fluid velocity below and above the splitter plate is different, ...
  • Thermo-fluid numerical simulation of the crotch absorbers’ cooling pinholes for alba storage ring 

    Escaler Puigoriol, Francesc Xavier; Arbó, Victor; Casas, Joan; Colldelram, Carles; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Facility crotch absorbers, that remove the unused storage ring radiation, incorporate an internal cooling system composed by a number of parallel pinholes and by the corresponding stainless steel ...
  • Numerical simulation of the alba synchrotron light source cooling system response to pump start-up and shut-down 

    Escaler Puigoriol, Francesc Xavier; Casas, Joan; Colldelram, Cales; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Source cooling system is submitted to regular pump start-ups and shut-downs. Moreover, pumps can trip due to motor power failures. As a result, the piping system can be subjected to surges and ...
  • Numerical simulation of the alba synchrotron light source cooling system response for failure prevention 

    Escaler Puigoriol, Francesc Xavier; Casas, Joan; Colldelram, Carles; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Source cooling system is designed with a common return pipe that interconnects the four consumption rings. Such configuration is believed to compromise its optimal operation. To understand its ...
  • Thermo-fluid study of the upc race-track microtron cooling system 

    Escaler Puigoriol, Francesc Xavier; Koubychine Merkulov, Youri Alexandrovich; Blasco Argente, Vicente Pablo; Romero Perea, Juan Antonio; Sánchez Díaz, Alexandre; Prieto, M.; Shvedunov, V.I. (2016)
    Comunicació de congrés
    Accés obert
    The cooling system of the race-track microtron (RTM), which is under construction at the Universitat Politècnica de Catalunya (UPC), has been simulated by means of a computational fluid dynamics (CFD) software. The hydraulic ...

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