Recent Submissions

  • Intercomparison of Radon Flux Monitors at Low and at High Radium Content Areas under Field Conditions 

    Rábago, Daniel; Quindós, Luis; Vargas Drechsler, Arturo; Sainz, Carlos; Radulescu, Ileana; Razvan Ioan, Mihail; Cardellini, Francesco; Capogni, Marco; Rizzo, Alessandro; Celaya, Santiago; Fuente, Ismael; Fuente, Marta; Grossi, Claudia; Rodríguez, Maria (2022-04-01)
    Article
    Open Access
    Interlaboratory exercises are a good tool to compare the response of different systems to the same quantity and to identify possible inconsistencies between them. One of the main goals of the EMPIR 19ENV01 traceRadon project ...
  • A method for the experimental characterisation of novel drag-reducing materials for very low Earth orbits using the Satellite for Orbital Aerodynamics Research (SOAR) mission 

    Crisp, Nicholas H.; Roberts, Peter C.E; Hanessian, Virginia; Sulliotti-Linner, Valeria; Herdrichd, Georg H.; García-Almiñana, Daniel; Kataria, Dhiren (2022-04-07)
    Article
    Open Access
    The Satellite for Orbital Aerodynamics Research (SOAR) is a 3U CubeSat mission that aims to investigate the gas–surface interactions (GSIs) of diferent materials in the very low Earth orbit environment (VLEO), i.e. below ...
  • ADBSat: Verification and validation of a novel panel method for quick aerodynamic analysis of satellites 

    Sinpetru, Luciana A.; Crisp, Nicholas H.; Roberts, Peter C.E; Sulliotti-Linner, Valeria; Hanessian, Virginia; Herdrichd, Georg H.; Romano, Francesco; García-Almiñana, Daniel; Rodríguez Donaire, Silvia (2022-06)
    Article
    Restricted access - publisher's policy
    We present the validation of ADBSat, a novel implementation of the panel method including a fast pseudo-shading algorithm, that can quickly and accurately determine the forces and torques on satellites in free-molecular ...
  • Development and analysis of novel mission scenarios based on Atmosphere-Breathing Electric Propulsion (ABEP) 

    Vaidya, Shreepali Sanjay; Traub, Constantin; Romano, Francesco; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Sureda Anfres, Miquel; García Berenguer, Marina (2022-03-21)
    Article
    Restricted access - publisher's policy
    Operating satellites in Very Low Earth Orbit (VLEO) benefit the already expanding New Space industry in applications including Earth Observation and beyond. However, long-term operations at such low altitudes require ...
  • Study of the aerodynamic forces on a simplified shape X-43 aircraft under supersonic conditions, design optimization 

    Carós Roca, Lidia; Jané Ippel, Christian; Coma Company, Martí; Pons Prats, Jordi; Bergadà Granyó, Josep Maria (2020-01-22)
    Article
    Open Access
    The paper focuses on the shape optimization, based on the resultant aerodynamic forces, of a simplified X-43 aircraft. The equations of oblique shock waves and Prandtl-Meyer expansion waves, along with the improvement of ...
  • Parallel sweep-based preconditioner for the solution of the linear Boltzmann transport equation 

    Borrell Pol, Ricard; Colomer Rey, Guillem; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (Elsevier, 2013-12-15)
    Article
    Restricted access - publisher's policy
    The Boltzmann transport equation is solved in the context of radiative heat transfer, for an isotropically scattering medium with reflecting boundaries. Under these circumstances, the different ordinates of the angular ...
  • Intake design for an Atmosphere-Breathing Electric Propulsion system (ABEP) 

    Romano, Francesco; Espinosa-Orozco, J.; Pfeiffer, M.; Herdrichd, Georg H.; Crisp, Nicholas H.; Holmes, Brandon E.A.; Edmonson, Steve; Haigh, Sarah J.; Livadiotti, Sabrina; Macario Rojas, Alejandro; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (2021-10)
    Article
    Restricted access - publisher's policy
    Challenging space missions include those at very low altitudes, where the atmosphere is source of aerodynamic drag on the spacecraft. To extend the lifetime of such missions, an efficient propulsion system is required. One ...
  • On the Characteristics of the Super-Critical Wake behind a Circular Cylinder 

    Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11-03)
    Article
    Open Access
    The flow topology of the wake behind a circular cylinder at the super-critical Reynolds number of Re=7.2×105 is investigated by means of large eddy simulations. In spite of the many research works on circular cylinders, ...
  • System modelling of very low Earth orbit satellites for Earth observation 

    Crisp, Nicholas H.; Roberts, Peter C.E; Romano, Francesco; García-Almiñana, Daniel (2021-10)
    Article
    Restricted access - publisher's policy
    The operation of satellites in very low Earth orbit (VLEO) has been linked to a variety of benefits to both the spacecraft platform and mission design. Critically, for Earth observation (EO) missions a reduction in altitude ...
  • Radiative transfer modeling with BGC-Argo float data in the Mediterranean Sea 

    Terzic, Elena; Miró Jané, Arnau; Organelli, Emanuele; Kowalczuk, Piotr; D'Ortenzio, Fabrizio; Lazzari, Paolo (Wiley, 2021-10-04)
    Article
    Open Access
    A radiative transfer model was parameterized and validated using Biogeochemical Argo float data acquired between 2012 and 2017 across the Mediterranean Sea. Fluorescence-derived chlorophyll urn:x-wiley:21699275:media:jgr ...
  • Onset of temporal dynamics within a low reynolds-number laminar fluidic oscillator 

    Sarwar, Wasim; Bergadà Granyó, Josep Maria; Mellibovsky Elstein, Fernando (2021-02-18)
    Article
    Restricted access - publisher's policy
    We investigate the onset of temporal dynamics of a fluidic oscillator (FO) in the laminar regime at very low Reynolds number ( where and are the velocity and channel height at inlet, and is the kinematic viscosity of the ...
  • Vortex induced vibrations of a pivoted finite height cylinder at low Reynolds number 

    Cajas García, Juan Carlos; Pastrana Maldonado, Daniel; Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume; Vázquez, Mariano; Treviño Treviño, Cesar (2021-06-03)
    Article
    Open Access
    The vortex induced vibrations (VIVs) of a pivoted cylinder with finite height have been numerically investigated. A mathematical model is introduced and described, and the resulting equations are numerically solved for low ...

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